The “Interaction Pick Up 2-Handed” demo was used as a reference to hold a box in the character's hand.
A box is placed on the child object of the chest bone to shake the box according to the movement of the walking motion.
If a character with Grounder FBBIK on is climbing a hill while holding a box, the position of the hand and the box will shift.
As with the demo, when placed as a child object of the character's root object, the position of the hand and the box were the same.
Is there a way to align the position of the hand and the box without turning Grounder FBBIK off while matching the motion and the shaking of the box?