Add breakdown poses:
Be careful about the box jump and how those hands are placed on the box.
Dynamically switch between IK with FK.
Duplicate the geometry and all the controls we grouped it and the unparented.
Connect the locater to the control.
Then only use the rotate to key the hand animation. Sometimes it will become a little bit kind of jumbled and vibrate slightly, so try to stick to just using sort of one axis.
Clean the elbow popping when switching IK and FK.
This button makes everything goes into component mode straight away.
Make a cluster. We can use this to fix the knees popping. But it only works well in one deriction.
Polishing but not destroy the animation by motion tail.