To use with chocolate, configure your chocolate as keyboard A (up, down, left, right) Connect the chocolate to the phone with bt and connect the phone (or pc) to the gp5 with USB. Now the 4th switch will activate tap tempo, and you can configure the other 3 buttons as you like
You can even send CC codes but in byte form. Example CC 0 0 in byte format is B0 00 00 (go to patch 00) and CC 0 99 is B0 00 63 (go to patch 99)
Settings
You can also use the keyboard to press the buttons: 1,2,3 and SPACE (Tap tempo) (Also A,S,D)