Also, if you want to have the hand free to move around at one point, then locked to a location later, you’ll have to learn about constraint ipos. What you do is to assign your IK actuator bone a copy location constraint for the point you want it to lock to. Then, for most of your anim, you set that constraint’s ipo to 0, meaning that it is not affected by it. When your character locks his hand into position, you key it to 1 at that frame. No matter where you move the main rig, the hand (or whatever IK actuator you’ve chosen) will stay put. Cool!