I'll give an example of how it could be used as a explaination. Say you want a figure of a naga, you can export a p4 person's head, import it back in as a prop, and replace the snake's head with the p4 head prop. But in order for the morph's to work on your new hybrid you need to use morph manager, all you need to do is load in the .cr2 of the original p4 & the .cr2 of the naga and copy the head morphs from one to the other.