Symantec Backup Exec (System Recovery 8.5 Manager)

hi guys, any links or overview you can provide for this softwares below:

Symantec Backup Exec - System Recover 8.5 Manager

Symantec Backup Exec - System Recovery 8.5 - Granular Restore Option

What does it do? What's the difference for those two software?

Does it has to be installed on the same server running Symantec Backup Exec 12.5?

Please help guys. 

Thanks in advance.