Large monitor continuous screen
I have a large monitor that requires dual DVI inputs which I manage through a Cable Matters Thunderbolt adapter on my Macbook Pro 15in 2017. Here is the problem: when I use the mac OS, it treats the monitor as two separate spaces so that documents must be entirely in one half or the other. If I run Win10 (or 7) on Parallels, the monitor appears as a single large space allowing the documents to be placed anywhere.
How do I setup my OS to create a single large continuous viewing space?
thanks
MacBook Pro 15″, macOS 10.14