Metahuman custom head

is it possible for you to just export one of your head skeletal meshes and make a morph for it(just drag a vertex of it) to see it is a different head and again re-import it and replace it and take videos?
because I am desperate to do this and don’t know what is problem. it takes 3 days of me still no hope.I review other tutorials they did it with plugins to make the morph works.
again thank you so much.