If you did not understand my explaination, check out the plans.

There are three buttons for each player.
Run Jump Run. The horizontal distance between the center of the Run and the center of the Jump button is 2.5", the horizontal distance between the center of the Jump button and the center of the Run button is 2.5". The vertical difference between the center of the Jump button and either of the Run buttons is 1.25".
The main point of my post was to direct the original poster to Jakobud's website where he could download the plans to the cabinet, which includes the control panel spacing.