VR Body - Sit down IK Pelvis

How to do sit ?

I made IK bones of the Hands, the Head - tracker 3, but it is impossible to tie the body to sit?

The solution turned out to be simple, the use of IK bones. As shows nothing complex.

Hey, I know it’s been a long time since you worked on this, but how exactly did you get sitting down to work? I want to use a tracker for pelvis but I have no idea what kind of IK to use for sitting down.