The active ragdoll separates animation for the upper and lower body with animation layers.
https://www.youtube.com/watch?v=Qw2gPVDM_gA&ab_channel=Marionette
Build an active ragdoll with “AnimationSetupInitializer” or add(or replace existing) the component manually**.**
Press the button “Play”.
Open “Animation”. Invoke Menu Item: “Window/Animation/Animation”.
Find “AnimationControllingPoints” in the character’s hierarchy.
Animate “Springs and Dampers” parameters.
Animate "Transform’s Position”.