I need to know your purpose. What exactly are you trying to do? The two suggestions above are solutions to the stated problem and you are looking for a more complicated way to accomplish your task. That or I do not understand what it is you are trying to do. One assumes that you are doing an animation and need this as a a special effect. That was the basis for the answers given. For a still render; the whole CR2 editing thing is way more work than clicking in the Hierarchy window to hide body parts, or animating/unhiding an existing Visibility dial. That is probably why you can't Google the answer you want. You aren't asking the correct question for the answer you want to be given.