I use my software with two monitors. The main monitor is a touchscreen and the second monitor is one used for playing the music (video or audio files).
Not sure what you mean by number panel ..... but perhaps give the software a try and see if it is what you like or not just to be sure.
Also, I do not use GameEx but you can close my application by sending it an "ESC" key press.
Also, also .....it's free