Need some help to configure buttons on my controlpanel

Hi

Im trying to figure out how to configure some of the buttons on my controlpanel, but seems that im stuck and need some help.

On my controlpanel I have 4 topbuttons in the left uppercorner, one of the buttons I want as pausebutton, one button as exitbutton, one button as backbutton and if I press those 4 buttons on the same time, I want Gameex to shutdown.

I have 3 encoders/controllers for the joysticks and buttons, so joy1 is for player1 joystick/buttons, joy2 is for player2 joystick/buttons, joy3 is for the topbuttons and spinnerbuttons.

How do I configure so only joy3 buttons got pause and exit, like now also joy1 and joy2 got same functions on thier buttons?

Keyboard shutdown seems only work with keyboard, but is it possible to get it to work with the buttons above and how do I get that to work? 

Thank you

Sincerly
Blacktiger