Reordering props

There is an interesting dilemma with the order in which props are placed and registered. For example, if you have two props with mouse click methods, and the props are placed so that they are half overlapping. Now if you click the part of the props that are not overlapping they will work properly. If you click the overlapping area, the prop that was added first will have priority. The interesting thing is that the prop that was added second will have visual priority. So if you overlap these two buttons and click the overlapped area, the function that will execute will belong the prop that is half not visible. There should be a way to both reorder the priority of a click and the priority of who is visible.