new backup with new taps

Hello....

i am a beginner in Symantec backup and tape library.

i am using Symantec backup Exec 2010 R2 and tape library is MSL2024.

from our media server i already added one of my sytem as remote agent. now i have to start  backup .Already tape library is configured  slots 1 -19 for other 4 server. Now 20-23 slots are free, so i have to add 4 tapes in this slot.

So pls give me the details of configuring this new  tapes for new backup.

Thanking You,

Shamlic