How to CloseEditorViewport on gamepad

In UDK I could press the select button on the gamepad and it would exit the game session in the editor.

I know I can do this with the escape key in UE4, but I want to have the select button do the same thing.

CloseEditorViewport was the function called in UDK. I’ve looked at the Defaultinput.ini file and can’t see a function similar to CloseEditorViewport. Infact theres only a handful of bindings set up.

Where can I see what the escape key is calling in UE4 so I can map the select button to the same function please?