What are groups?
Groups allow collaboration between users with a common interest. For example, a group might be formed for wireless professionals in Los Angeles, communications students in Dallas or a ComSoc committee. Each group can have subscribers that maintains a group home page where subscribers communicate amongst themselves. The user creating the group is the moderator and determines who can belong to the groups. There are two types of groups: Open - membership requests are accepted immediately. Moderated - membership requests must be approved.
You can learn more about groups here: http://community.comsoc.org/content/community-groups