diff --git a/prototype/src/main/java/info/promut/indicatorsets/IndicatorSetsPlugin.java b/prototype/src/main/java/info/promut/indicatorsets/IndicatorSetsPlugin.java
index 19376b9..73780e9 100644
--- a/prototype/src/main/java/info/promut/indicatorsets/IndicatorSetsPlugin.java
+++ b/prototype/src/main/java/info/promut/indicatorsets/IndicatorSetsPlugin.java
@@ -20,7 +20,7 @@ public class IndicatorSetsPlugin extends PluginActivator implements PreCreateAss
 
     private Logger log = Logger.getLogger(getClass().getName());
 
-    public static final String INDICATORS_WS_NAME = "ProMUT Indicator Sets";
+    public static final String INDICATORS_WS_NAME = "Indicator Sets";
     public static final String INDICATORS_WS_URI = "info.promut.workspace";
     public static final String INDICATOR = "info.promut.indicator";
     public static final String INDICATOR_SET = "info.promut.indicator_set";
diff --git a/prototype/src/main/resources/migrations/migration2.json b/prototype/src/main/resources/migrations/migration2.json
index fb1a6ee..573e241 100644
--- a/prototype/src/main/resources/migrations/migration2.json
+++ b/prototype/src/main/resources/migrations/migration2.json
@@ -259,6 +259,19 @@
                 }
             ]
         },
+        {
+            "value": "Data Source",
+            "uri": "info.promut.data_source",
+            "dataTypeUri": "dmx.core.text",
+            "viewConfigTopics": [
+                {
+                    "typeUri": "dmx.webclient.view_config",
+                    "children": {
+                        "dmx.webclient.add_to_create_menu": false
+                    }
+                }
+            ]
+        },
         {
             "value": "Indicator Usage Recommendation",
             "uri": "info.promut.indicator_usage",
@@ -400,7 +413,7 @@
                 },
                 {
                     "childTypeUri": "info.promut.indicator_audience",
-                    "childCardinalityUri": "dmx.core.one"
+                    "childCardinalityUri": "dmx.core.many"
                 },
                 {
                     "childTypeUri": "info.promut.indicator_formula",
@@ -416,7 +429,7 @@
                 },
                 {
                     "childTypeUri": "info.promut.indicator_type",
-                    "childCardinalityUri": "dmx.core.one"
+                    "childCardinalityUri": "dmx.core.many"
                 },
                 {
                     "childTypeUri": "info.promut.indicator_usage",
@@ -440,17 +453,21 @@
                 },
                 {
                     "childTypeUri": "info.promut.dimension_name",
-                    "childCardinalityUri": "dmx.core.one"
+                    "childCardinalityUri": "dmx.core.many"
                 },
                 {
                     "childTypeUri": "info.promut.system_name",
-                    "childCardinalityUri": "dmx.core.one"
+                    "childCardinalityUri": "dmx.core.many"
                 },
                 {
                     "childTypeUri": "info.promut.indicator_category",
                     "customAssocTypeUri": "info.promut.categorizes",
                     "childCardinalityUri": "dmx.core.many"
                 },
+                {
+                    "childTypeUri": "info.promut.data_source",
+                    "childCardinalityUri": "dmx.core.many"
+                },
                 {
                     "childTypeUri": "dmx.base.url",
                     "childCardinalityUri": "dmx.core.many"