BE2010R3SP2 - Segment out tape slots?

I have a tape drive that has 12 slots.  Is it possible to have that segmented out say in groups of 4, so one job will only use tapes in the first 4 slots, another job will use tapes in the 2nd group of 4 slots, and a third job using tapes in the 3rd group of 4 slots without using tapes from other slots?

I have backup jobs that have different retention periods, so I'm trying to separate the tapes that are being used for it.