Right, I tried to do collar bone, but the one generated by the metarig doesn’t move at all, even with weight paints. So I tried subdividing the arm bone and using it like a collar bone, but all that does is make a really long arm with joints where it shouldn’t be. For example if I move the arm forward straight, the collar bone now points straight forward like the arm. I can’t find a way to make it so the collar bone moves a little with the arm, and the arm bone pivots around where the collar bone can’t bend too.
I’ve tried shape key drivers, but I don’t believe they import into VRChat and when I did try them, the inbetweens from arms down to arms up do a crazy deformed balloon thing.
I’ve looked up EVERYTHING having to do with shoulder, weight paint, collar bones, there is nothing and it seems collar bones on most peoples rigs are totally stationary. I’ve seen someones that was offset to the armbone and had some rotation, but there was no tutorial on how to do it.