How to control the maximum amount of the waiver to not show an unapplied credit?

How can we control the maximum amount of the waiver to not show an unapplied credit? This happens when student is qualified for multiple waivers that can pay the same items. We are trying to control it in the Payment Priority but the waiver seems to be calculating the maximum amount based on the student's unpaid balance even though not all items in the unpaid balance are qualified for the waivers.

We have a student that is qualified for multiple waivers.

> First, he is a non-resident student that is qualified for resident tuition rate. A waiver was used to reduce the non-resident rate to resident rate.