diff --git a/docs/UserGuide.md b/docs/UserGuide.md
index d15b88bebba..f5c7564f5d1 100644
--- a/docs/UserGuide.md
+++ b/docs/UserGuide.md
@@ -5,14 +5,14 @@ title: User Guide
StaffConnect (SC) is a **desktop app for managing contacts of Professors and Tutors, optimized for use via a Command Line Interface** (CLI) while still having the benefits of a Graphical User Interface (GUI). If you can type fast, SC can get your contact management tasks done faster than traditional GUI apps.
-* Table of Contents
-{:toc}
+* Table of Contents
+ {:toc}
--------------------------------------------------------------------------------------------------------------------
## Quick start
-1. Ensure you have Java `11` or above installed in your Computer.
+1. Ensure you have Java `11` or above installed in your Computer.
2. Download the latest `StaffConnect.jar` from [here](https://github.com/AY2324S2-CS2103-F08-3/tp/).
@@ -103,7 +103,7 @@ Format: `edit INDEX [n/NAME] [p/PHONE] [e/EMAIL] [m/MODULE] [f/FACULTY] [v/VENUE
* Existing values will be updated to the input values.
* When editing tags, the existing tags of the person will be removed i.e adding of tags is not cumulative.
* You can remove all the person’s tags by typing `t/` without
- specifying any tags after it.
+ specifying any tags after it.
* When editing availabilities, the existing availabilites of the person will be removed i.e adding of availabilities is not cumulative.
* You can remove all the person’s availabilities by typing `a/` without
specifying any availabilities after it.
@@ -183,7 +183,7 @@ Format: `meeting INDEX [d/DESCRIPTION] [s/DATETIME]`
* Duplicate meetings with the same `DESCRIPTION` and `DATETIME` in the same person is not allowed.
Examples:
-* `meeting 1 d/ Meet for finals preparation s/ 12/04/2024 18:00` adds a meeting to the first person with the description of `Meet for finals preparation` and the date and time of `12/04/2024 18:00`
+* `meeting 1 d/ Meet for finals preparation s/ 12/04/2024 18:00` adds a meeting to the first person with the description of `Meet for finals preparation` and the date and time of `12/04/2024 18:00`
* `meeting 2 d/ Meet for practical exam s/ 20/04/2024 15:00` adds a meeting to the second person with the description of `Meet for practical exam` and the date and time of `20/04/2024 15:00`
@@ -201,6 +201,34 @@ Examples:
* `list` followed by `delete 2` deletes the 2nd person in the contacts.
* `find Betsy` followed by `delete 1` deletes the 1st person in the results of the `find` command.
+### Marking a person as favourite: `mark`
+
+Marks the specified person from the contacts as favourite.
+
+Format: `mark INDEX`
+
+* Marks the person at the specified `INDEX`.
+* The index refers to the index number shown in the displayed person list.
+* The index **must be a positive integer** 1, 2, 3, …
+
+Examples:
+* `list` followed by `mark 2` marks the 2nd person in the contacts.
+* `find Betsy` followed by `mark 1` marks the 1st person in the results of the `find` command.
+
+### Unmarking a person as favourite: `unmark`
+
+Unmarks the specified person from the contacts as favourite.
+
+Format: `unmark INDEX`
+
+* Unmarks the person at the specified `INDEX`.
+* The index refers to the index number shown in the displayed person list.
+* The index **must be a positive integer** 1, 2, 3, …
+
+Examples:
+* `list` followed by `unmark 2` unmarks the 2nd person in the contacts.
+* `find Betsy` followed by `unmark 1` unmarks the 1st person in the results of the `find` command.
+
### Clearing all entries : `clear`
Clears all entries from the contacts.
@@ -270,5 +298,7 @@ Action | Format, Examples
**Find** | `find KEYWORD [MORE_KEYWORDS]`
e.g., `find James Jake`
**Sort** | `sort [ATTRIBUTE]`
e.g., `sort p/`
**Add Meeting** | `meeting INDEX [d/DESCRIPTION] [s/DATETIME]`
e.g., `meeting 1 d/ Meet for finals preparation s/ 12/04/2024 18:00`
+**Mark** | `mark INDEX`
e.g., `mark 3`
+**Unmark** | `unmark INDEX`
e.g., `unmark 3`
**List** | `list`
**Help** | `help`