The access to QMC is not controlled by licenses, only by membership in the local QlikView Administrators group (on the server where QMC is installed).
So the QMC administrator doesn't need to have a license or access to the AccessPoint.
So, with two users, A and B, A can have access to QlikView AccessPoint while user B can be a member of the QlikView Administrators group and therefore only have access to the QMC.