"Subgroups." What are they? More importantly, why should you care?
Subgroups are a way to create separate groupings within a Groupsite. These subgroups have all of the standard features of a Groupsite (discussions, email, blog, calendar, file cabinet, member profiles, member objectives) while also allowing you to narrow the number of participants.
Why would you care? Here are 3 possible reasons:
1. Size - If your Groupsite membership has grown significantly, it might help to allow certain members to also organize by subgroups to allow them to focus on special interest projects as well as participate in the broader Groupsite ..