Multiple Member Access Profiles

I am not clear on the interaction between member access profiles. A client would like the following situation. Entity and Category are secured.

1. R/W to Asia region (E), R/W to Actual and Budget (C)

2. Ability to turn off W access to Budget, but not Actual

If they create 3 mbrAccProf:

a. R/W access to Asia Entity and R access to all Categories

b. R to All Entities and W to Actual and Budget

c. R to All Entities and W to Actual only

If they assign a. and b. to the Asia team, does that net to R/W access to Asia Entity and R/W to Actual and Budget?

If they then remove b. and assign c., does that net to R/W access to Asia Entity and R/W to Actual only?

The purpose of this is to avoid having 2 MbrAccProf for every region, e.g. AsiaActualBudget and AsiaActual, CanadaActualBudget and CanadaBudget, etc. There are more combinations of category desired, but this encompasses the problem.

Sorry for the long post, thanks in advance for any insight you can provide. I have consulted the help and searched the forum, but have not found understanding.

Paul B.