The Group module is a contributed module that provides the ability to create collections of users and content on a site.
This functionality, in OSU Drupal, is typically used to create micro-sites within a larger site. For example, an academic site can contain groups for each school or unit within the college. This keeps all of the units together under the same college umbrella, but allows members of individual units to manage their own members and content within the scope of the group, without having to worry about accidentally changing or deleting another unit's content.
Groups require quite a bit of configuration on many different levels. Let's take a look at some of the different things that we'll need to consider.