Users set whether or not comments may be added to an item on the Set Private/Shared Comments page.

Follow these steps to open the Set Private/Shared Comments page.
Step 1 Open the Blackboard Learning System Administrator Control Panel.
Step 2 Select Manage Content under Content System.
Step 3 Select Modify next to a folder to be modified. The Modify Folder page will appear.
Step 4 Select Comments. The Comments page will appear.
Step 5 Select Set Private/Shared Comments.
Select Shared to allow users who have access to the item to view and add comments. Select Private and other users may not view or add comments.