can i contain tape usage in a pool?

NBU 7.5.05

i learned something new today. tape pools.

if i create a tape pool and assign, let's say, 2 tape cartridges to it, can i control my backup policy to use only those tapes in that pool? if yes, should the pool run out of availables tape cartridges, will the policy wait for the pool to be replenished or will it fault?

reason is i want to be able to tell, physically, that tape labels ABC and DEF are used only for databases. because at the moment, my backups are spread out across multiple tape cartridges and as such difficult to tell which cartridge holds what data from which server.