Backup Exec 15 to AWS Tapes

Hey all, 

I've setup backup exec to backup our 2 weekly jobs to AWS tapes.  It's been working fine the last few weeks.  Each backup going to individual tapes.  This past weekend, both jobs went to the same tape.  I would like to set it so that it uses individual tapes so if i need to recover in the future, I dont have to pull down the entire weeks data and save on download costs.  Can you please explain how i can set it up?  

Thanks