Using a simple implementation, you can use the Copy Bone node to copy the position and motion of the Source Bone to the Target Bone. Here the character's right-hand auxiliary weapon bone (weapon_r), is selected as the Target Bone, copying the Source Bone's, the character's left hand (hand_l), position and motion. Here the effect of the Copy Bone node can be seen as it moves the weapon bone at runtime from the character's right hand to their left hand.