If your course has several cohorts and one forum, it is possible to set the forum to have a separate forum space for each cohort group.

In your forum, go to the Administration block and click on Settings.

Go to the Common module settings dropdown. Go to Group mode and select ‘Separate groups’ from the drop-down list before clicking on Save changes.

This means that each group member can only see their own group – other groups are invisible.

You can use the group function for other course activities such as Choice (poll), wiki, glossary or blog.