Dynamic presets are an extender device. You have the option for selecting them or not selecting them. When you add them system builder builds all the logic for you. In simpl you have to write all the logic on your own. A good presets module(dynamic presets extender) involves symbols that deal with internal memory of your processor. This allows users to essentially change the program and save there presets. I would modify the background or buttons before not letting the program build all the logic.