Need help saving morph/shape

I have combined several character morphs and found shapes I like and don't like. For example, I like the shape of the breast, but don't like the shape of the legs.
How do I only save the breast area shape?
Also, is there a way to use morph sliders but restrict the the morph to only part of the body. For example: what if I have base G8F and I want the hips of victoria.
Comments
As lng as they aren't HD morphs https://www.daz3d.com/shape-splitter will let you split any fuill body morphs that you want only part of.
thanks i will check
Do you know if it comes with a comprehensive manual? I watched a few you tube videos on it and I am not sure what they are doing in the videos. It looks like the add-on might be over my head.