Groups are subsets of participants for a given site. Groups can be created on an ad-hoc basis by instructors in course sites or by owners or administrators in collaboration sites. Groups are useful to organize study groups, project teams, and other non-official subsets of site participants. In course sites, each course roster section behaves like a group. i.e., group-aware tools recognize the section as a group.
You can use groups to make site content available to specific site participants. For example, a private announcement can be made available to a group and email notification can be sent to members of that group. You can also use groups to create group assignments, or limit access to a test or quiz with settings for specific groups.
For information on creating and editing groups, see Create groups
Note: If an assignment or assessment has been released to specific groups, changing which groups have access to the assignment, or modifying/deleting a group after students have begun work is not allowed.
Go to Site Info.
Select the Site Info tool from the Tool Menu of your site.