How to let the V-ray tier A (up to 6 cores) usage covered by V-ray tier B (+8 cores) license

How to let the V-ray tier A (up to 6 cores) usage covered by V-ray tier B (+8 cores) license?

Hi,

We buy 10 V-ray tier B (+8 cores) license and have installed them.

We found Backup Exec 2014 detected we have installed 10 V-ray tier B (+8 cores) license and use 2.

Backup Exec 2014 also detected we have installed 0 V-ray tier A up to 6 cores) license and use 8.

How can we let the V-ray tier A (up to 6 cores) usage covered by V-ray tier B (+8 cores) license?

Thanks.