Update subsection-prerequisites

docs/open-edx/course-authors/subsection-prerequisites.md

@@ -14,9 +14,13 @@ Before configuring prerequisites on individual modules, you must enable the feat
 2. **Access Advanced Settings:**
    Click on the **"Settings"** dropdown menu in the top navigation bar and select **"Advanced Settings"**.
 
+   ![Settings dropdown menu with Advanced Settings](images/subsection-prerequisites/01-advanced-settings-menu.png)
+
 3. **Enable the Feature:**
    Scroll down to find the field **Enable Subsection Prerequisites**. Type `true` into the input field.
 
+   ![Enable Subsection Prerequisites field set to true](images/subsection-prerequisites/02-enable-subsection-prerequisites.png)
+
 4. **Save Changes:**
    Click the **"Save Changes"** button at the bottom of the page.
 
@@ -29,6 +33,8 @@ Next, you need to designate which subsection must be completed first.
 1. **Navigate to the Course Outline:**
    Go to your course's main **Course Outline** view. Ensure you have a section containing at least two subsections (for example: *Post-course assessment* and *You're done!*).
 
+   ![Course outline with a section containing two subsections](images/subsection-prerequisites/03-course-outline-section.png)
+
 2. **Open Subsection Settings:**
    Locate the subsection that learners must complete first (the prerequisite). Click its **Configure** (gear) icon.
 
@@ -38,6 +44,8 @@ Next, you need to designate which subsection must be completed first.
 4. **Mark as a Prerequisite:**
    Check the box labeled **"Make this subsection available as a prerequisite to other content"**.
 
+   ![Advanced tab with the prerequisite checkbox selected](images/subsection-prerequisites/04-prerequisite-subsection-settings.png)
+
 5. **Save:**
    Click **"Save"**.
 
@@ -50,22 +58,30 @@ Now, configure the subsequent subsection so that it remains locked until the pre
 1. **Open Settings for the Dependent Subsection:**
    In the course outline, click the **Configure** (gear) icon for the subsection you want to block (e.g., *You're done!*).
 
+   ![Configure icons for the subsections in the course outline](images/subsection-prerequisites/05-configure-blocked-subsection.png)
+
 2. **Access Advanced Settings:**
    In the pop-up modal, select the **ADVANCED** tab.
 
 3. **Select the Prerequisite:**
    Under **Prerequisite**, click the dropdown menu and select the name of the prerequisite subsection you configured in Part 2.
 
+   ![Prerequisite dropdown with the prerequisite subsection selected](images/subsection-prerequisites/06-select-prerequisite-dropdown.png)
+
 4. **Define Minimum Requirements:**
    Once you select the prerequisite, additional fields will appear:
    * **Minimum Score (%):** Enter the percentage of the total score learners must earn in the prerequisite subsection to unlock this content (allowed values: `0-100`). *Note: If the prerequisite is not graded, set this to `0`.*
    * **Minimum Completion (%):** Enter the percentage of the prerequisite subsection that learners must complete (allowed values: `0-100`). *Note: If you set both score and completion greater than zero, learners must satisfy both conditions.*
 
+   ![Minimum Score and Minimum Completion fields](images/subsection-prerequisites/07-minimum-score-completion.png)
+
 5. **Save Configuration:**
    Click **"Save"**.
 
 6. **Verify in the Course Outline:**
    Once saved, a padlock icon and a label reading `Prerequisite: [Name]` will appear directly beneath the locked subsection in your course outline.
 
+   ![Prerequisite label shown under the subsection in the course outline](images/subsection-prerequisites/08-outline-prerequisite-shown.png)
+
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