In this form, you will add or remove groups to this group. Doing this with several groups can create a hierarchy of groups (think about a tree structure) with parent groups and children groups. The privileges of parent groups flow down to children groups.

WebGUI will prevent you from creating circular structures that could cause it to go into an infinite loop while recursing down through groups.

By default Admin is a subgroup of all default webgui groups.

In addition, Content Managers, Package Managers, Template Managers, Secondary Admins, are subgroups of "turn on admin"