How to create custom dialog with two scrollable boxes side-by-side

Hi all, I’m new to the kodi addon development scene, but I’m already addicted. I have experience with general coding, but this is my first kodi-related venture. I think I have the basics down, but now I’ve come to a point where I’d like to create a custom dialog window that has two scrollable textboxes side-by-side. I’ve skimmed over the Skinners guide, which I found via another thread, but it’s a lot to digest. I was wondering if anyone could suggest which controls would be best suited to accomplish the side-by-side functionality. I’d also like to have both boxes be scrollable simultaneously. The boxes will both have source code inside them, allowing for a comparison, which is why id like them to be scrolled at the same time. If someone could provide an example of how I might accomplish this that’s be even better. All input is appreciated