Hands Model controlled by controllers (no hands tracking)

Looking for instruction for new Oculus Quest Meta XR SDK (All-in-One) how to add a hand model instead of a controller model. For classic game mod: control of hands using a controller (press the grip - your hand clenches into a fist, etc). YouTube is full of videos on how to do this using XR Integration tool kit, but no similar instruction for Meta XR Sdk. 

Unity Engine