I do it by selecting the head and then choosing "spawn morph target", it creates a single morph. 

I then save the figure, and save the morph as an injection with the morphing clothes plugin. Then I can apply it to any character I want based on that model. 

There are other ways to save the morph injection I'm sure, but I just an amateur, so I just whatever utility I have handy to do that for me. :)