On a Central Administration Server (CAS) the option to set Preferred Servers under Backup Exec Icon –> Configuration & Settings is not available.
A hotfix is now available for this issue in the current version(s) of the product(s) mentioned in this article. Refer to the Hotfix link under Related Documents at the end of this article to obtain the hotfix needed to resolve the issue.
Backup Exec 2012 Rev 1798 Service Pack 3 (TECH205351).
Backup Exec 2012 Central Administration Server