Okay, so a slightly over dramatic title - but I'd really like to get this wired up tonight to give it a go! I think I know how to achieve what I want but don't want to go ahead and do it before getting confirmation from some people who really knows what they are doing! All I want to do is kill something!

I have a Vogatek Mk.III Jamma Supergun -

I want to wire this upto my Ipac4 (which is already linked up to a control panel for my PC/Xbox. My questions are as follows -
Do I simply connect a wire between a button terminal on the supergun and the corresponding button terminal on the ipac4? Also, can you link more than 2 wires to one control terminal on the ipac4 or is that asking for trouble?
Also, there is 2 grounds on the Vogatek supergun - would it be enough to simply have one wire from each going to the 2 ground terminals on the ipac4? As the control panel buttons are already daisy chained for the PC controls surely that is all I would need to do?
Hope this all makes sense - I'd be really grateful if anyone can help me with this so I can get wiring asap!
