Big Box - Controller mapping to specific controller/USB encoder

[CorbuTheRaven]

Hi all,

Diving head in on my Arcade Cabinet build and now working out the kinks.

I've finished my 4 person control panel and am using a 5th USB encoder and 6 buttons for system functions. 

Is there a way to limit controller mapping to a single controller/encoder? On the fifth controller I have 6 system buttons, but Big Box looks at them as the same as buttons on other controllers. So for example my button 6 on encoder 5 (system) to turn down volume when set to Big Box will have all the other 4 controllers/encoders button 6 turn down volume.

If I turn off multiple controllers option then it won't register the 5th encoder at all.

Mame is great as it sees each encoder as separate (Player 1-5), so mapping buttons is specific to on encoder. Big Box doesn't seem to operate that way.

Very much appreciated. Kids are chomping to play, looking forward to getting this fully setup so they can dig in on their own.

Cheers!