Cropout project: where the menu control with gamepad is implemented ?

Hi,

I’m struggling a bit in my project to set up reusable menu controls with gamepad.
I’ve something so so working but that’s not elegant and I need to do this for each menu (pause, player inventory, …)

I want to learn from experts, and I’ve noticed that such controls exists in the cropout project project from Epic.
I’ve found the widget, the player controler, …
But i haven’t found the place where for example the gamepad up down button is associated to selecting the menu object on top of current selection. and similar for down, validate …

Has anyone found where this is coded ?strong text