Groups are sets of users who need the same type of access to content. We require that you organize users into groups. You can then set permissions at the group level, to apply a set of capabilities to all users in the group. When you want a new write-back user, just add them to the groups that give the access they need.
Rules:
A group contains 1 or more users
A group belongs to 1 or more schemas
A group has a set of permissions
Below a demonstration of how to create a group in the WriteBackExtreme Management Console.