>>321486070
you record an animation with one keyframe(so just the state you want your avatar to end up in).
Then you setup that gesture layer controller and make animation transitions in that, there's examples in assets when you import vrc sdk3 (vrcsdk/examples3/animation/controllers hands layer).
I saw your /v/ post, if this is from scratch I hope you have shapekeys to work with, otherwise get to making those first