Add or Remove a KDC from a Realm

Start Kerberos Manager.
From the Configuration menu, choose Configure Realms.
From the Configuration tab, select a realm from the Realm list, and then click Properties.
Click the KDC tab.
Perform one of the following tasks:
- To add a KDC, click Add, type the fully qualified domain name of the KDC host, and click OK.
  
  If necessary, adjust the order of the KDCs in the KDC list by clicking the Up or Down buttons.
  
  -or-
- To remove a KDC, select the KDC in the KDC list, click Remove, and then, when the confirmation message appears, click Yes.
Click OK.