Step 2: Create Two New Administrator Groups
In this step you will create two new administrator 
  groups.
  - Select Users and Groups in the 
    main navigation pane. 
    
 
   
  - In the User-Groups Resource tree, 
    right click the everyone (All Users) group. 
 
  - Select Add 
    User-Group. The following pop-up window appears:  
    
 
   
  - Name the group InternalAdministrators, 
    and click Create. 
 
  - Repeat steps 2-4 to create a second group called 
    ExternalAdministrators. The Resource tree should now include 
    your new additions: 
    

   
You have now created two groups that contain 
  portal administrators whose authority will be specified as this tutorial continues.