eject with two library paritions, one CAP

Hi All

I am researching how to eject tapes. I have two Netbackup appliances (different domains). I have ACSLS. I have one SL3000 library configured into two partions with one CAP between them. Because of the partioning the CAP mode needs to be manually per ACSLS handbook. I would like to use Vault for the tape management. How do I configure the tape ejects since I need to manually reserve the CAP and then issue the physical tape eject from ACSLS? I read throught the Vault admin guide, but couldn't identify the eject case which fits to my environment - there is a deferred option but it doesn't explain what to do when I need to do the eject via ACSLS.
 

Any input is highly appreciated!

Thank you

Gabriela