If you have existing Groups in your site, you can make question topics exclusively available to specific Groups.
Note: The option to assign topics to a specific group will not appear unless groups have already been created. To create a group, go to How do I create groups?
Post to selected group.
In topic settings under the Post to heading, select the Only members of selected groups radio button to specify which groups will be able to view the question topic. Check the box next to the group for the topic.
Save settings.
Select Publish or Save as Draft to apply group settings.
Group member view
If a question topic is limited to a specific group or groups, a banner will display above the question topic summary, to indicate that it is a group topic.
Note: If a student is not a member of the selected Group(s) for a given question topic, the student will not see the item in the list of All Questions.
By default, Instructor and Teaching Assistant roles will see all group topics, regardless of group membership. (However, the “View and group topic” permission may be enabled or disabled for specific site roles if desired.)