Scale UMG to Fit Screen

I have a UMG screen with a widget switcher to click through images on the screen. It works fine on my widescreen and my resolution, but I can’t seem to figure out how to get it to work on other resolutions, like a 1280x1024 (Non-Widescreen). I currently have it locked to the center anchor. Is there a way to scale the entire horizontal box/widget switcher and the images so that they keep the same proportions, but just get smaller? Now, if I view it on a smaller resolution, the image stays the same size and runs off the side of the screen.