Technically, you can't. The morphs are tied to the body part, since they tell Poser how to move the vertices of that body part. But you can "slave" the morph to a full body morph. Set the morphs on the body parts to the values you want, make sure all other morphs are at zero value, make sure your figure is in zero position too, then choose Figure->Create Full Body Morph. There you are.

The pen is mightier than the sword. But if you literally want to have some impact, use a typewriter

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