How to deactivate hand tracking

I'm currently developing a VR magic game using the Meta XR SDK. In my project, I don't want to use hand tracking, even if users place their controllers on the desk. I tried changing the tracking support option in the OVRCameraRig inspector to "Controller Only", but it doesn't seem to work.

Inspector path: Controller Features → Tracking Support → Controller Only

Does anyone know how to fix this issue?

Sorry if my English is a bit rough—thanks for your help!