Creating Multiple Slide Master issue

I am creating different Master Slides within Quizmaker to maintain consistency/look and feel. I have multiple questions within the Group Created. When I go into each question then to Design and then select the Master slide I want applied and right click on it, I select. apply only to this question...when I do this, it actually applies that same master to ALL questions within the group? How do I apply different masters to each question without it applying to ALL? Thanks!