How to perform tape replacement using BE2012

Hi all,

I have a HP 1/8 G2 LTO-5 3000 SAS Autoloader to perform data backup to tape from a server running Windows 2008 R2. The server was installed with Symantec Backup Exec 2012 and linked to the autoloader. I want to know exactly what needs to be done on the BE2012 when I need to replace the tape cartridges in the autoloader. I know how to remove the magazine to replace the tape cartridge but I wasn't exactly sure what needs to be done on the BE2012.

Someone please enlighten me. Thanks.

Regards,
Qingyan