Learn how to add physics to a Control Rig for use in games and animation
https://dev.epicgames.com/community/learning/tutorials/rpYD/unreal-engine-control-rig-physics
Is the page undergoing an update? The link throws up a 404 error. I was in the middle of setting up the physics 
Nice tutorial, thanks for sharing. The integration of physics directly into Control Rig looks really powerful, especially for adding secondary motion without setting up complex external simulations. I’m curious how stable it is in larger production setups with multiple dynamic chains or characters.