Nope, that isn't necessary. I just tried it. I set the following dials to 1: the Abdomen's "Belly Out" dial, the Chest's "Pectoral" dial, and the Left Shoulder's "BicepFlex" dial -- 3 totally unrelated dials. Then I clicked the Figure menu, selected "Create Full Body Morph" and called the new dial "weird". I set the three previously mentioned dials back to 0. Then I selected the figure's Body, and the new "weird" dial was there. I set it to 1...and the body morphed exactly as it had when the three original dials had been set. So there you have it: three unrelated morphs combined into one :-)