If you use the Profiler software: assign the corresponding keystrokes to the shifter ('S' and 'X' I think), you can have as many buttons as you want sending the same key.

Quote from huxorator :

I like the HUUUP button the most!

This particular box is standing on the desk of (SLR) Hupi, you can find a description (german) with a list of parts here, http://www.hupi.ch/Temp/DashBoxAnleitung.pdf