Split Screen

Hover over the green circle in the top left corner of the window. (an app, Chrome or whatever.)

Chose “Tile Window” (there are multiple options--you want the side-by-side option).

Pick what you want on the other side. Usually your option is Chrome. Click on it.

To leave split screen you can put your cursor to the top and click on the green dot.

You will then have to use 3 fingers to swipe to the left. Then you repeat the process, cursor to the top, click on the green dot.

Use this same process to remove the split-screen.