How to add custom input axis mapping to Inputs tab of Project Settings?

I want to add support of Nintendo Switch Pro Controller and PS5 DualSense gyroscope input to my game. I’ve already added custom driver modules (inherited from IInputDeviceModule) for this gamepads. How to register custom axis in UE4 without modifying engine code (only game code)?

Is it possible to define custom actions in Unreal Engine? Or is it possible to redefine the mobile gyroscope input? How to do it?