How to preserve a job and running another one ?

Hello to all,

I'm new user of Backup Exec, and I have a problem that occurs sometimes. My backup plan's defined with a complete on friday evening; this backup can take some days. Sometimes we don't check (for some issues) if there's enough bands avaliable on the library. So we have to put available bands when the backup job is still running. Do you know if we're forced to cancel the running job to perform an Inventory of the devices ?

I looked for information everywhere, but I have not found an answer, maybe the handling is very simple ... but for the moment it is beyond me.

Thanks in advance.