Apple Remote Access MultiPort Server - Manual (Page 43)

If you choose the Only Zones Listed option, a dialog box appears from which
you can select the one zone to which guests will have access.
6 If necessary, select a zone and click Add.
The zone you selected is added to the Zone List. Note that the zone in which
the server is located is also included in the Zone List in italics; this zone
cannot be removed.
Registering users 43