Attached Link: Dr Geeps university.

If you want to save your new faces goto File > Export > Wavefront OBJ. it will have single frame selected > click OK. In the new list, Uncheck UNIVERSE. then check Head > click OK. Give the face a name and select what folder you want to save the morph in > click Save. Last > Uncheck everything and Check As Morph Target. hit OK.

To load the morph. Select the figures head and select the Properties tab click on Load Morph Target. Geometry file will say None. click on the button beside that at the top and browse to your saved face morph and open it. Hit Ok again and the new morph should be in the head dials.

You should read Dr Geeps poser tutorials. They are among the best for newbies and are free.