You can reorder groups (roles).
It will be applied to the lists and drop-down lists in the administration screen.

1. Click in the header.

2. Click "Users & System Administration".
   
   

3. Click Groups (or Roles).

4. On the group you want to reorder, click .

5. Click "Reorder".
   

6. Move the group you want to reorder to the desired position by a drag-and-drop action.

7. Click Save.