Why do you want to do this? Value-signalling properties are "expensive". If you want to do "a bunch of things" when Button A is pressed, simply put the code for "the bunch of things" in the Value Changed Event for Button A. If it is a "collection" of the code from Buttons B, C, D, and E, so what? That way, you can arrange them in the order you wish and avoid the unnecessary calls to the Front Panel. If you are worried about Block Diagram "space", encapsulate the code in a sub-VI that takes only 32x32 pixels.
Bob Schor