>>336799401
>World constraint question - is it possible to have the worldspace object thingy follow
https://youtu.be/aoagXC_ezqI?t=116
Yes. See this video here.

Also you can reverse engineer it using these links
https://booth.pm/ja/items/2911163
https://github.com/VRLabs/VRChat-Avatars-3.0/releases

Good luck