Zoom in on Source - ATEM Software Control

I am working in the ATEM software control for the constellation switch, and Iam wanting to only see the top left corner of my source, but I want that cropped image to be extended over one whole screen. I have tried doing this in supersource, but the size will not go higher than 1 (which I would need to it do to for the cropped image to take up the whole screen). I am sure this is possible, but I cannot figure out the controls on how to do it. Any support/help is appreciated.