I need help understanding the controls

Hello! So my setup is a little weird. I’m using an oculus rift with an xbox controller. (It came out of the box that way, with only a remote rather than 2 vr controllers. I think it’s just an older release of the oculus.)

Anyway, I’m trying to figure out the xbox controls for expressions, sitting, laying down, and avatar features. Please help me ive been trying at this for way too long.