Can I make the scrollbar in a scrollbox shorter?

When you make a scrollbox (for the sake of this example it is Vertical), the scrollbar that comes with it takes up the full height. That’s not super desired in every instance, and there doesn’t seem to be a way to add offsets to the dimensions of the scrollbar. Has anyone else run into this and figured out a way to do that?

Don’t know about making it shorter but I can show you how to remove it completely and just use the buttons/whatever you have in the box to scroll directly.