Add Realm Dialog Box

From the Configuration menu, choose Configure Realms.
On the Configuration tab, click Add.

NOTE:If the Configure Realms command is unavailable (dimmed), your system administrator has disabled this capability. Contact your system administrator for information about how to add or change the realms you may use.

From this dialog box, you can add a new realm to the Realm list.

The options are:

Realm	Type the realm name that you want to add. The realm name is case sensitive — usually uppercase in a Kerberos environment.
KDC host	Type the name of the host that runs the security server for this realm. You must specify at least one KDC (Key Distribution Center) host that will govern the realm. If this realm contains multiple security servers, determine which server is the administrative KDC, and then specify it here.