diff --git a/common/static/common/js/components/WorkbasketUserAssignment/AssignUserForm.js b/common/static/common/js/components/WorkbasketUserAssignment/AssignUserForm.js
index 47044d0f8..96b8a3f0a 100644
--- a/common/static/common/js/components/WorkbasketUserAssignment/AssignUserForm.js
+++ b/common/static/common/js/components/WorkbasketUserAssignment/AssignUserForm.js
@@ -1,4 +1,5 @@
 import React from 'react';
+import Select from 'react-select'
 import { useEffect } from 'react';
 import accessibleAutocomplete from 'accessible-autocomplete'
 
@@ -26,7 +27,7 @@ function AssignUserForm({ assignmentType, users }) {
   return (
     <>
       <form action={assignUsersUrl} method="POST" data-testid={"assign-user-form"}>
-        <input type="hidden" value={CSRF_TOKEN} name="csrfmiddlewaretoken"/>
+        <input type="hidden" value={CSRF_TOKEN} name="csrfmiddlewaretoken" />
         <div className="govuk-form-group">
           <label className="govuk-label" htmlFor={elementId}>
             {label}
@@ -34,20 +35,21 @@ function AssignUserForm({ assignmentType, users }) {
           <div id={`${elementName}-hint`} className="govuk-hint">
             {hint}
           </div>
-          <select
+          {/* See scss/components for style overrides */}
+          <Select
             required={true}
+            unstyled
+            isMulti
+            className="react-select-container"
+            classNamePrefix="react-select"
             id={elementId}
             name={elementName}
             data-testid='assign-user-select'
-          >
-            <option value="">Select a user</option>
-            {users.map(user => 
-              <option key={user.pk} value={user.pk}>{user.name}</option>
-            )}
-          </select>
+            options={users}
+          />
         </div>
         <div className="govuk-form-group">
-          <input type="hidden" name="assignment_type" value={assignmentType}/>
+          <input type="hidden" name="assignment_type" value={assignmentType} />
         </div>
         <button type="submit" className="govuk-button" data-prevent-double-click="true">Save</button>
       </form>
diff --git a/common/static/common/js/components/WorkbasketUserAssignment/index.js b/common/static/common/js/components/WorkbasketUserAssignment/index.js
index 28e921008..d1d8ec20e 100644
--- a/common/static/common/js/components/WorkbasketUserAssignment/index.js
+++ b/common/static/common/js/components/WorkbasketUserAssignment/index.js
@@ -18,49 +18,27 @@ function WorkbasketUserAssignment({ action, assignment, users, buttonId, formId
   const [showForm, setShowForm] = useState(null);
   const assignmentType = assignment == "workers" ? "WORKBASKET_WORKER" : "WORKBASKET_REVIEWER";
 
-  const removeFormDiv = () => {
-    const possibleFormDivs = [
-      document.getElementById("assign-workers-form"),
-      document.getElementById("unassign-workers-form"),
-      document.getElementById("assign-reviewers-form"),
-      document.getElementById("unassign-reviewers-form"),
-    ];
-    possibleFormDivs.forEach(form => {
-      if (form) {
-        const assignmentRow = form.previousSibling;
-        assignmentRow.classList.remove("govuk-summary-list__row--no-border");
-        form.remove();
-      }
-    });
-  }
-
   const createFormDiv = () => {
-    const formDiv = document.createElement("div");
-    formDiv.id = formId;
+    const formDiv = document.getElementById(formId);
     formDiv.className = "govuk-!-margin-top-4";
-    const assignmentButton = document.getElementById(buttonId);
-    const assignmentRow = assignmentButton.closest(".govuk-summary-list__row");
-    assignmentRow.classList.add("govuk-summary-list__row--no-border");
-    assignmentRow.after(formDiv);
     setShowForm(formDiv);
   }
 
   const handleClick = (e) => {
     e.preventDefault();
     const isShown = document.getElementById(formId);
-    removeFormDiv();
-    if(showForm && isShown) {
+    if (showForm && isShown) {
       setShowForm(null);
       return;
     }
     createFormDiv();
-}
+  }
 
   function UserForm({ action }) {
     if (action === "Assign")
-      return <AssignUserForm assignmentType={assignmentType} users={users}/>;
+      return <AssignUserForm assignmentType={assignmentType} users={users} />;
     else
-      return <UnassignUserForm users={users}/>;
+      return <UnassignUserForm users={users} />;
   }
 
   return (
@@ -75,7 +53,7 @@ function WorkbasketUserAssignment({ action, assignment, users, buttonId, formId
       </button>
 
       {showForm !== null && createPortal(
-        <UserForm action={action}/>,
+        <UserForm action={action} />,
         showForm
       )}
     </>
diff --git a/common/static/common/scss/_components.scss b/common/static/common/scss/_components.scss
index a0c445891..af0348bf4 100644
--- a/common/static/common/scss/_components.scss
+++ b/common/static/common/scss/_components.scss
@@ -90,3 +90,29 @@
   }
 
 }
+
+.react-select__control {
+  @extend .govuk-select;
+}
+
+.react-select__menu {
+  @extend .govuk-body;
+  background-color: govuk-colour("white");
+  border: 1px solid govuk-colour("mid-grey");
+}
+
+.react-select__option {
+  padding: 4px;
+
+  &:hover {
+    background-color: govuk-colour("light-grey");
+  }
+}
+
+.react-select__multi-value {
+  margin-right: 4px;
+  padding: 0 4px;
+  background-color: govuk-colour("light-grey");
+  border: 1px solid govuk-colour("dark-grey");
+  border-radius: 5px;
+}
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 3d781d36c..24e4edd8c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -25,6 +25,7 @@
         "moment": "^2.29.4",
         "react": "^18.2.0",
         "react-dom": "^18.2.0",
+        "react-select": "^5.8.0",
         "sass": "^1.38.2",
         "sass-loader": "^12.1.0",
         "style-loader": "^3.0.0",
@@ -1747,6 +1748,75 @@
         "node": ">=10.0.0"
       }
     },
+    "node_modules/@emotion/babel-plugin": {
+      "version": "11.11.0",
+      "resolved": "https://registry.npmjs.org/@emotion/babel-plugin/-/babel-plugin-11.11.0.tgz",
+      "integrity": "sha512-m4HEDZleaaCH+XgDDsPF15Ht6wTLsgDTeR3WYj9Q/k76JtWhrJjcP4+/XlG8LGT/Rol9qUfOIztXeA84ATpqPQ==",
+      "dependencies": {
+        "@babel/helper-module-imports": "^7.16.7",
+        "@babel/runtime": "^7.18.3",
+        "@emotion/hash": "^0.9.1",
+        "@emotion/memoize": "^0.8.1",
+        "@emotion/serialize": "^1.1.2",
+        "babel-plugin-macros": "^3.1.0",
+        "convert-source-map": "^1.5.0",
+        "escape-string-regexp": "^4.0.0",
+        "find-root": "^1.1.0",
+        "source-map": "^0.5.7",
+        "stylis": "4.2.0"
+      }
+    },
+    "node_modules/@emotion/babel-plugin/node_modules/convert-source-map": {
+      "version": "1.9.0",
+      "resolved": "https://registry.npmjs.org/convert-source-map/-/convert-source-map-1.9.0.tgz",
+      "integrity": "sha512-ASFBup0Mz1uyiIjANan1jzLQami9z1PoYSZCiiYW2FczPbenXc45FZdBZLzOT+r6+iciuEModtmCti+hjaAk0A=="
+    },
+    "node_modules/@emotion/babel-plugin/node_modules/escape-string-regexp": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-4.0.0.tgz",
+      "integrity": "sha512-TtpcNJ3XAzx3Gq8sWRzJaVajRs0uVxA2YAkdb1jm2YkPz4G6egUFAyA3n5vtEIZefPk5Wa4UXbKuS5fKkJWdgA==",
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/@emotion/babel-plugin/node_modules/source-map": {
+      "version": "0.5.7",
+      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
+      "integrity": "sha512-LbrmJOMUSdEVxIKvdcJzQC+nQhe8FUZQTXQy6+I75skNgn3OoQ0DZA8YnFa7gp8tqtL3KPf1kmo0R5DoApeSGQ==",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/@emotion/babel-plugin/node_modules/stylis": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/stylis/-/stylis-4.2.0.tgz",
+      "integrity": "sha512-Orov6g6BB1sDfYgzWfTHDOxamtX1bE/zo104Dh9e6fqJ3PooipYyfJ0pUmrZO2wAvO8YbEyeFrkV91XTsGMSrw=="
+    },
+    "node_modules/@emotion/cache": {
+      "version": "11.11.0",
+      "resolved": "https://registry.npmjs.org/@emotion/cache/-/cache-11.11.0.tgz",
+      "integrity": "sha512-P34z9ssTCBi3e9EI1ZsWpNHcfY1r09ZO0rZbRO2ob3ZQMnFI35jB536qoXbkdesr5EUhYi22anuEJuyxifaqAQ==",
+      "dependencies": {
+        "@emotion/memoize": "^0.8.1",
+        "@emotion/sheet": "^1.2.2",
+        "@emotion/utils": "^1.2.1",
+        "@emotion/weak-memoize": "^0.3.1",
+        "stylis": "4.2.0"
+      }
+    },
+    "node_modules/@emotion/cache/node_modules/stylis": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/stylis/-/stylis-4.2.0.tgz",
+      "integrity": "sha512-Orov6g6BB1sDfYgzWfTHDOxamtX1bE/zo104Dh9e6fqJ3PooipYyfJ0pUmrZO2wAvO8YbEyeFrkV91XTsGMSrw=="
+    },
+    "node_modules/@emotion/hash": {
+      "version": "0.9.1",
+      "resolved": "https://registry.npmjs.org/@emotion/hash/-/hash-0.9.1.tgz",
+      "integrity": "sha512-gJB6HLm5rYwSLI6PQa+X1t5CFGrv1J1TWG+sOyMCeKz2ojaj6Fnl/rZEspogG+cvqbt4AE/2eIyD2QfLKTBNlQ=="
+    },
     "node_modules/@emotion/is-prop-valid": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/@emotion/is-prop-valid/-/is-prop-valid-1.2.1.tgz",
@@ -1760,11 +1830,91 @@
       "resolved": "https://registry.npmjs.org/@emotion/memoize/-/memoize-0.8.1.tgz",
       "integrity": "sha512-W2P2c/VRW1/1tLox0mVUalvnWXxavmv/Oum2aPsRcoDJuob75FC3Y8FbpfLwUegRcxINtGUMPq0tFCvYNTBXNA=="
     },
+    "node_modules/@emotion/react": {
+      "version": "11.11.4",
+      "resolved": "https://registry.npmjs.org/@emotion/react/-/react-11.11.4.tgz",
+      "integrity": "sha512-t8AjMlF0gHpvvxk5mAtCqR4vmxiGHCeJBaQO6gncUSdklELOgtwjerNY2yuJNfwnc6vi16U/+uMF+afIawJ9iw==",
+      "dependencies": {
+        "@babel/runtime": "^7.18.3",
+        "@emotion/babel-plugin": "^11.11.0",
+        "@emotion/cache": "^11.11.0",
+        "@emotion/serialize": "^1.1.3",
+        "@emotion/use-insertion-effect-with-fallbacks": "^1.0.1",
+        "@emotion/utils": "^1.2.1",
+        "@emotion/weak-memoize": "^0.3.1",
+        "hoist-non-react-statics": "^3.3.1"
+      },
+      "peerDependencies": {
+        "react": ">=16.8.0"
+      },
+      "peerDependenciesMeta": {
+        "@types/react": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/@emotion/serialize": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/@emotion/serialize/-/serialize-1.1.3.tgz",
+      "integrity": "sha512-iD4D6QVZFDhcbH0RAG1uVu1CwVLMWUkCvAqqlewO/rxf8+87yIBAlt4+AxMiiKPLs5hFc0owNk/sLLAOROw3cA==",
+      "dependencies": {
+        "@emotion/hash": "^0.9.1",
+        "@emotion/memoize": "^0.8.1",
+        "@emotion/unitless": "^0.8.1",
+        "@emotion/utils": "^1.2.1",
+        "csstype": "^3.0.2"
+      }
+    },
+    "node_modules/@emotion/sheet": {
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/@emotion/sheet/-/sheet-1.2.2.tgz",
+      "integrity": "sha512-0QBtGvaqtWi+nx6doRwDdBIzhNdZrXUppvTM4dtZZWEGTXL/XE/yJxLMGlDT1Gt+UHH5IX1n+jkXyytE/av7OA=="
+    },
     "node_modules/@emotion/unitless": {
       "version": "0.8.1",
       "resolved": "https://registry.npmjs.org/@emotion/unitless/-/unitless-0.8.1.tgz",
       "integrity": "sha512-KOEGMu6dmJZtpadb476IsZBclKvILjopjUii3V+7MnXIQCYh8W3NgNcgwo21n9LXZX6EDIKvqfjYxXebDwxKmQ=="
     },
+    "node_modules/@emotion/use-insertion-effect-with-fallbacks": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/@emotion/use-insertion-effect-with-fallbacks/-/use-insertion-effect-with-fallbacks-1.0.1.tgz",
+      "integrity": "sha512-jT/qyKZ9rzLErtrjGgdkMBn2OP8wl0G3sQlBb3YPryvKHsjvINUhVaPFfP+fpBcOkmrVOVEEHQFJ7nbj2TH2gw==",
+      "peerDependencies": {
+        "react": ">=16.8.0"
+      }
+    },
+    "node_modules/@emotion/utils": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/@emotion/utils/-/utils-1.2.1.tgz",
+      "integrity": "sha512-Y2tGf3I+XVnajdItskUCn6LX+VUDmP6lTL4fcqsXAv43dnlbZiuW4MWQW38rW/BVWSE7Q/7+XQocmpnRYILUmg=="
+    },
+    "node_modules/@emotion/weak-memoize": {
+      "version": "0.3.1",
+      "resolved": "https://registry.npmjs.org/@emotion/weak-memoize/-/weak-memoize-0.3.1.tgz",
+      "integrity": "sha512-EsBwpc7hBUJWAsNPBmJy4hxWx12v6bshQsldrVmjxJoc3isbxhOrF2IcCpaXxfvq03NwkI7sbsOLXbYuqF/8Ww=="
+    },
+    "node_modules/@floating-ui/core": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/@floating-ui/core/-/core-1.6.0.tgz",
+      "integrity": "sha512-PcF++MykgmTj3CIyOQbKA/hDzOAiqI3mhuoN44WRCopIs1sgoDoU4oty4Jtqaj/y3oDU6fnVSm4QG0a3t5i0+g==",
+      "dependencies": {
+        "@floating-ui/utils": "^0.2.1"
+      }
+    },
+    "node_modules/@floating-ui/dom": {
+      "version": "1.6.3",
+      "resolved": "https://registry.npmjs.org/@floating-ui/dom/-/dom-1.6.3.tgz",
+      "integrity": "sha512-RnDthu3mzPlQ31Ss/BTwQ1zjzIhr3lk1gZB1OC56h/1vEtaXkESrOqL5fQVMfXpwGtRwX+YsZBdyHtJMQnkArw==",
+      "dependencies": {
+        "@floating-ui/core": "^1.0.0",
+        "@floating-ui/utils": "^0.2.0"
+      }
+    },
+    "node_modules/@floating-ui/utils": {
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/@floating-ui/utils/-/utils-0.2.1.tgz",
+      "integrity": "sha512-9TANp6GPoMtYzQdt54kfAyMmz1+osLlXdg2ENroU7zzrtflTLrrC/lgrIfaSe+Wu0b89GKccT7vxXA0MoAIO+Q=="
+    },
     "node_modules/@govuk-react/back-link": {
       "version": "0.10.6",
       "resolved": "https://registry.npmjs.org/@govuk-react/back-link/-/back-link-0.10.6.tgz",
@@ -3710,6 +3860,11 @@
         "undici-types": "~5.26.4"
       }
     },
+    "node_modules/@types/parse-json": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/@types/parse-json/-/parse-json-4.0.2.tgz",
+      "integrity": "sha512-dISoDXWWQwUquiKsyZ4Ng+HX2KsPL7LyHKHQwgGFEA3IaKac4Obd+h2a/a6waisAoepJlBcx9paWqjA8/HVjCw=="
+    },
     "node_modules/@types/prop-types": {
       "version": "15.7.9",
       "resolved": "https://registry.npmjs.org/@types/prop-types/-/prop-types-15.7.9.tgz",
@@ -3734,6 +3889,14 @@
         "@types/react": "*"
       }
     },
+    "node_modules/@types/react-transition-group": {
+      "version": "4.4.10",
+      "resolved": "https://registry.npmjs.org/@types/react-transition-group/-/react-transition-group-4.4.10.tgz",
+      "integrity": "sha512-hT/+s0VQs2ojCX823m60m5f0sL5idt9SO6Tj6Dg+rdphGPIeJbJ6CxvBYkgkGKrYeDjvIpKTR38UzmtHJOGW3Q==",
+      "dependencies": {
+        "@types/react": "*"
+      }
+    },
     "node_modules/@types/scheduler": {
       "version": "0.16.5",
       "resolved": "https://registry.npmjs.org/@types/scheduler/-/scheduler-0.16.5.tgz",
@@ -4373,6 +4536,20 @@
         "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
       }
     },
+    "node_modules/babel-plugin-macros": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/babel-plugin-macros/-/babel-plugin-macros-3.1.0.tgz",
+      "integrity": "sha512-Cg7TFGpIr01vOQNODXOOaGz2NpCU5gl8x1qJFbb6hbZxR7XrcE2vtbAsTAbJ7/xwJtUuJEw8K8Zr/AE0LHlesg==",
+      "dependencies": {
+        "@babel/runtime": "^7.12.5",
+        "cosmiconfig": "^7.0.0",
+        "resolve": "^1.19.0"
+      },
+      "engines": {
+        "node": ">=10",
+        "npm": ">=6"
+      }
+    },
     "node_modules/babel-plugin-polyfill-corejs2": {
       "version": "0.4.7",
       "resolved": "https://registry.npmjs.org/babel-plugin-polyfill-corejs2/-/babel-plugin-polyfill-corejs2-0.4.7.tgz",
@@ -4563,7 +4740,6 @@
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/callsites/-/callsites-3.1.0.tgz",
       "integrity": "sha512-P8BjAsXvZS+VIDUI11hHCQEv74YT67YUi5JJFNWIqL235sBmjX4+qx9Muvls5ivyNENctx46xQLQ3aTuE7ssaQ==",
-      "dev": true,
       "engines": {
         "node": ">=6"
       }
@@ -4828,6 +5004,21 @@
         "url": "https://opencollective.com/core-js"
       }
     },
+    "node_modules/cosmiconfig": {
+      "version": "7.1.0",
+      "resolved": "https://registry.npmjs.org/cosmiconfig/-/cosmiconfig-7.1.0.tgz",
+      "integrity": "sha512-AdmX6xUzdNASswsFtmwSt7Vj8po9IuqXm0UXz7QKPuEUmPB4XyjGfaAr2PSuELMwkRMVH1EpIkX5bTZGRB3eCA==",
+      "dependencies": {
+        "@types/parse-json": "^4.0.0",
+        "import-fresh": "^3.2.1",
+        "parse-json": "^5.0.0",
+        "path-type": "^4.0.0",
+        "yaml": "^1.10.0"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
     "node_modules/create-jest": {
       "version": "29.7.0",
       "resolved": "https://registry.npmjs.org/create-jest/-/create-jest-29.7.0.tgz",
@@ -5318,7 +5509,6 @@
       "version": "1.3.2",
       "resolved": "https://registry.npmjs.org/error-ex/-/error-ex-1.3.2.tgz",
       "integrity": "sha512-7dFHNmqeFSEt2ZBsCriorKnn3Z2pj+fd9kmI6QoWw4//DL+icEBfc0U7qJCisqrTsKTjw4fNFy2pW9OqStD84g==",
-      "dev": true,
       "dependencies": {
         "is-arrayish": "^0.2.1"
       }
@@ -5666,6 +5856,11 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/find-root": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/find-root/-/find-root-1.1.0.tgz",
+      "integrity": "sha512-NKfW6bec6GfKc0SGx1e07QZY9PE99u0Bft/0rzSD5k3sO/vwkVUpDUKVm5Gpp5Ue3YfShPFTX2070tDs5kB9Ng=="
+    },
     "node_modules/find-up": {
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/find-up/-/find-up-4.1.0.tgz",
@@ -6109,6 +6304,29 @@
       "resolved": "https://registry.npmjs.org/immutable/-/immutable-4.3.4.tgz",
       "integrity": "sha512-fsXeu4J4i6WNWSikpI88v/PcVflZz+6kMhUfIwc5SY+poQRPnaf5V7qds6SUyUN3cVxEzuCab7QIoLOQ+DQ1wA=="
     },
+    "node_modules/import-fresh": {
+      "version": "3.3.0",
+      "resolved": "https://registry.npmjs.org/import-fresh/-/import-fresh-3.3.0.tgz",
+      "integrity": "sha512-veYYhQa+D1QBKznvhUHxb8faxlrwUnxseDAbAp457E0wLNio2bOSKnjYDhMj+YiAq61xrMGhQk9iXVk5FzgQMw==",
+      "dependencies": {
+        "parent-module": "^1.0.0",
+        "resolve-from": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=6"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/import-fresh/node_modules/resolve-from": {
+      "version": "4.0.0",
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       "resolved": "https://registry.npmjs.org/error-ex/-/error-ex-1.3.2.tgz",
       "integrity": "sha512-7dFHNmqeFSEt2ZBsCriorKnn3Z2pj+fd9kmI6QoWw4//DL+icEBfc0U7qJCisqrTsKTjw4fNFy2pW9OqStD84g==",
-      "dev": true,
       "requires": {
         "is-arrayish": "^0.2.1"
       }
@@ -15183,6 +15630,11 @@
         }
       }
     },
+    "find-root": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/find-root/-/find-root-1.1.0.tgz",
+      "integrity": "sha512-NKfW6bec6GfKc0SGx1e07QZY9PE99u0Bft/0rzSD5k3sO/vwkVUpDUKVm5Gpp5Ue3YfShPFTX2070tDs5kB9Ng=="
+    },
     "find-up": {
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/find-up/-/find-up-4.1.0.tgz",
@@ -15506,6 +15958,22 @@
       "resolved": "https://registry.npmjs.org/immutable/-/immutable-4.3.4.tgz",
       "integrity": "sha512-fsXeu4J4i6WNWSikpI88v/PcVflZz+6kMhUfIwc5SY+poQRPnaf5V7qds6SUyUN3cVxEzuCab7QIoLOQ+DQ1wA=="
     },
+    "import-fresh": {
+      "version": "3.3.0",
+      "resolved": "https://registry.npmjs.org/import-fresh/-/import-fresh-3.3.0.tgz",
+      "integrity": "sha512-veYYhQa+D1QBKznvhUHxb8faxlrwUnxseDAbAp457E0wLNio2bOSKnjYDhMj+YiAq61xrMGhQk9iXVk5FzgQMw==",
+      "requires": {
+        "parent-module": "^1.0.0",
+        "resolve-from": "^4.0.0"
+      },
+      "dependencies": {
+        "resolve-from": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/resolve-from/-/resolve-from-4.0.0.tgz",
+          "integrity": "sha512-pb/MYmXstAkysRFx8piNI1tGFNQIFA3vkE3Gq4EuA1dF6gHp/+vgZqsCGJapvy8N3Q+4o7FwvquPJcnZ7RYy4g=="
+        }
+      }
+    },
     "import-local": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/import-local/-/import-local-3.1.0.tgz",
@@ -15597,8 +16065,7 @@
     "is-arrayish": {
       "version": "0.2.1",
       "resolved": "https://registry.npmjs.org/is-arrayish/-/is-arrayish-0.2.1.tgz",
-      "integrity": "sha512-zz06S8t0ozoDXMG+ube26zeCTNXcKIPJZJi8hBrF4idCLms4CG9QtK7qBl1boi5ODzFpjswb5JPmHCbMpjaYzg==",
-      "dev": true
+      "integrity": "sha512-zz06S8t0ozoDXMG+ube26zeCTNXcKIPJZJi8hBrF4idCLms4CG9QtK7qBl1boi5ODzFpjswb5JPmHCbMpjaYzg=="
     },
     "is-bigint": {
       "version": "1.0.4",
@@ -17414,8 +17881,7 @@
     "lines-and-columns": {
       "version": "1.2.4",
       "resolved": "https://registry.npmjs.org/lines-and-columns/-/lines-and-columns-1.2.4.tgz",
-      "integrity": "sha512-7ylylesZQ/PV29jhEDl3Ufjo6ZX7gCqJr5F7PKrqc93v7fzSymt1BpwEU8nAUXs8qzzvqhbjhK5QZg6Mt/HkBg==",
-      "dev": true
+      "integrity": "sha512-7ylylesZQ/PV29jhEDl3Ufjo6ZX7gCqJr5F7PKrqc93v7fzSymt1BpwEU8nAUXs8qzzvqhbjhK5QZg6Mt/HkBg=="
     },
     "loader-runner": {
       "version": "4.3.0",
@@ -17577,6 +18043,11 @@
       "resolved": "https://registry.npmjs.org/mdast-util-to-string/-/mdast-util-to-string-2.0.0.tgz",
       "integrity": "sha512-AW4DRS3QbBayY/jJmD8437V1Gombjf8RSOUCMFBuo5iHi58AGEgVCKQ+ezHkZZDpAQS75hcBMpLqjpJTjtUL7w=="
     },
+    "memoize-one": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/memoize-one/-/memoize-one-6.0.0.tgz",
+      "integrity": "sha512-rkpe71W0N0c0Xz6QD0eJETuWAJGnJ9afsl1srmwPrI+yBCkge5EycXXbYRyvL29zZVUWQCY7InPRCv3GDXuZNw=="
+    },
     "merge-stream": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/merge-stream/-/merge-stream-2.0.0.tgz",
@@ -17785,6 +18256,14 @@
       "resolved": "https://registry.npmjs.org/p-try/-/p-try-2.2.0.tgz",
       "integrity": "sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ=="
     },
+    "parent-module": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/parent-module/-/parent-module-1.0.1.tgz",
+      "integrity": "sha512-GQ2EWRpQV8/o+Aw8YqtfZZPfNRWZYkbidE9k5rpl/hC3vtHHBfGm2Ifi6qWV+coDGkrUKZAxE3Lot5kcsRlh+g==",
+      "requires": {
+        "callsites": "^3.0.0"
+      }
+    },
     "parse-entities": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/parse-entities/-/parse-entities-2.0.0.tgz",
@@ -17802,7 +18281,6 @@
       "version": "5.2.0",
       "resolved": "https://registry.npmjs.org/parse-json/-/parse-json-5.2.0.tgz",
       "integrity": "sha512-ayCKvm/phCGxOkYRSCM82iDwct8/EonSEgCSxWxD7ve6jHggsFl4fZVQBPRNgQoKiuV/odhFrGzQXZwbifC8Rg==",
-      "dev": true,
       "requires": {
         "@babel/code-frame": "^7.0.0",
         "error-ex": "^1.3.1",
@@ -17840,6 +18318,11 @@
       "resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.7.tgz",
       "integrity": "sha512-LDJzPVEEEPR+y48z93A0Ed0yXb8pAByGWo/k5YYdYgpY2/2EsOsksJrq7lOHxryrVOn1ejG6oAp8ahvOIQD8sw=="
     },
+    "path-type": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/path-type/-/path-type-4.0.0.tgz",
+      "integrity": "sha512-gDKb8aZMDeD/tZWs9P6+q0J9Mwkdl6xMV8TjnGP3qJVJ06bdMgkbBlLU8IdfOsIsFz2BW1rNVT3XuNEl8zPAvw=="
+    },
     "picocolors": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.0.0.tgz",
@@ -18048,6 +18531,22 @@
         "xtend": "^4.0.1"
       }
     },
+    "react-select": {
+      "version": "5.8.0",
+      "resolved": "https://registry.npmjs.org/react-select/-/react-select-5.8.0.tgz",
+      "integrity": "sha512-TfjLDo58XrhP6VG5M/Mi56Us0Yt8X7xD6cDybC7yoRMUNm7BGO7qk8J0TLQOua/prb8vUOtsfnXZwfm30HGsAA==",
+      "requires": {
+        "@babel/runtime": "^7.12.0",
+        "@emotion/cache": "^11.4.0",
+        "@emotion/react": "^11.8.1",
+        "@floating-ui/dom": "^1.0.1",
+        "@types/react-transition-group": "^4.4.0",
+        "memoize-one": "^6.0.0",
+        "prop-types": "^15.6.0",
+        "react-transition-group": "^4.3.0",
+        "use-isomorphic-layout-effect": "^1.1.2"
+      }
+    },
     "react-shallow-renderer": {
       "version": "16.15.0",
       "resolved": "https://registry.npmjs.org/react-shallow-renderer/-/react-shallow-renderer-16.15.0.tgz",
@@ -18755,6 +19254,12 @@
         "requires-port": "^1.0.0"
       }
     },
+    "use-isomorphic-layout-effect": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/use-isomorphic-layout-effect/-/use-isomorphic-layout-effect-1.1.2.tgz",
+      "integrity": "sha512-49L8yCO3iGT/ZF9QttjwLF/ZD9Iwto5LnH5LmEdk/6cFmXddqi2ulF0edxTwjj+7mqvpVVGQWvbXZdn32wRSHA==",
+      "requires": {}
+    },
     "util-deprecate": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
@@ -19044,6 +19549,11 @@
       "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.1.1.tgz",
       "integrity": "sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g=="
     },
+    "yaml": {
+      "version": "1.10.2",
+      "resolved": "https://registry.npmjs.org/yaml/-/yaml-1.10.2.tgz",
+      "integrity": "sha512-r3vXyErRCYJ7wg28yvBY5VSoAF8ZvlcW9/BwUzEtUsjvX/DKs24dIkuwjtuprwJJHsbyUbLApepYTR1BN4uHrg=="
+    },
     "yargs": {
       "version": "17.7.2",
       "resolved": "https://registry.npmjs.org/yargs/-/yargs-17.7.2.tgz",
diff --git a/package.json b/package.json
index e9f61205b..57acb3a40 100644
--- a/package.json
+++ b/package.json
@@ -28,6 +28,7 @@
     "moment": "^2.29.4",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
+    "react-select": "^5.8.0",
     "sass": "^1.38.2",
     "sass-loader": "^12.1.0",
     "style-loader": "^3.0.0",
diff --git a/workbaskets/jinja2/workbaskets/summary-workbasket.jinja b/workbaskets/jinja2/workbaskets/summary-workbasket.jinja
index 73589d9c0..9b7adb46c 100644
--- a/workbaskets/jinja2/workbaskets/summary-workbasket.jinja
+++ b/workbaskets/jinja2/workbaskets/summary-workbasket.jinja
@@ -46,6 +46,7 @@
   {{ navigation(request, "summary") }}
 
   {{ govukSummaryList({
+    "classes": "govuk-!-margin-bottom-0",
     "rows": [
       {
         "key": {"text": "TOPS/Jira number"},
@@ -101,6 +102,11 @@
           ]
         },
       },
+		]
+  })}}
+  {{ govukSummaryList({
+    "classes": "govuk-!-margin-bottom-0",
+    "rows": [
       {
         "key": {"text": "Assigned to"},
         "value": {"text": display_assigned_users(assigned_workers, "workers")},
@@ -128,6 +134,11 @@
           ]
         },
       },
+		]
+  })}}
+  <div id="assign-workers-form"></div>
+  {{ govukSummaryList({
+    "rows": [
       {
         "key": {"text": "Assigned to review"},
         "value": {"text": display_assigned_users(assigned_reviewers, "reviewers")},
@@ -157,6 +168,7 @@
       },
 		]
   })}}
+  <div id="assign-reviewers-form"></div>
   <script nonce="{{ request.csp_nonce }}">
     const CSRF_TOKEN = "{{ csrf_token }}";
 
diff --git a/workbaskets/views/ui.py b/workbaskets/views/ui.py
index d23414f90..a3534eeb2 100644
--- a/workbaskets/views/ui.py
+++ b/workbaskets/views/ui.py
@@ -438,7 +438,7 @@ def get_context_data(self, **kwargs):
             .order_by("first_name", "last_name")
         )
         assignable_users = [
-            {"pk": user.pk, "name": user.get_full_name()} for user in users
+            {"value": user.pk, "label": user.get_full_name()} for user in users
         ]
 
         # set to true if there is an associated goods import batch with an unsent notification