Good morning Anne,
In order to delegate a backup job to another server in the manner you've described, you'll not only need to have Backup Exec licensed and installed on the second server, you'll also need CASO licensed and installed on the primary backup server. You can then configure the second server as MMS (Managed Media Server), and can then delegate and monitor jobs from the primary CAS server.
Hope this answers your questions. Let me know if I can be of further help.
Regards,
Greg