Default [Q]Changing target of IR remote hotekys on TV-Box

i'm using a new R-BOX android TV BOX (android 4.2 quadcore).
On the ir remote control, there are 4 hotkey buttons (for Music-Player, TV-App,..)
Is there a way to change the target apps, so the TV-App Button will start e.g. XBMC instead??
could not find any information on google, maybe cause i dont really know, what to search for.
Many thanks for any advice!