Click "Administration >"
Click "User Groups"
Click "New Group"
Click this field to add in the name of the new user group.
Click "Submit"
Click "Action"
Click "New Sub-Group"
Click this field to add in the name for the new Sub Group.
Click "Submit"
Click "Action"
Click "Edit"
Click this field and rename the group.
Click "Submit"
Click "Action"
Click "Remove"