How would I go about resizing a model through a LocalScript?

So I am trying to make a resize model tool and I already did create a tool which resizes models however that is not what I wanted

Here is what I am trying to do

You know how similar to resizing meshes

I want the resize to go straight and directly to that certain axis of where it is being resized

Let me be clearer when you resize a meshpart they usually stretch instead of all of their size getting bigger altogether

How would I emulate something similar in a model with parts?

such as a door, a window, or anything with parts in a model?

I just have no idea on how to go on about it and I don't even know if it is possible to do so