This is a little hard for me to explain. say I have a big cube, and I want to make one side convex by grabbing a single vertex in the middle of in face, and drag it out slightly. Is there a way to freeze all the perimeter vertexes in place so that I end up with a cube with one convex face instead of a cubish thing with only the four vertexes on the corners left alone, and all the other perimeter vertexes stretched up and breaking the original plane of that face.
I hope that was clear enough, if not I’ll upload a file.