Is there a tutorial of any sort for that?

*There are. Do a forum search or a google search for Poser Joint Controlled Morphs. 

I suppose it's possible to create your JCMs with Poser's morphing tool and link them to the figure's limb rotation dial with the edit dependency function, but if you want to go first class, you should have Zbrush and colorcurvature's Morphloader scripts in my opinion.

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