How to Use Split View on a Mac

First, open or locate the windows or apps that you would like to use Split View with.

In my case, I have the Notes app and Google Chrome open on my desktop.

Next, move your mouse to the full-screen button and let it stay there for a moment until the drop-down appears.

It should only take about two seconds for the drop-down to appear, so if it doesn't appear after two to three seconds, move your mouse and try again.

Now, decide to which side of your screen you want to tile that particular app. In my case, I like to have my Notes app on the right.

So, I click on "Tile Window to Right of Screen."

You'll see that the app you originally tiled is where you wanted it to be. All you have to do now is click on the other app or window you want to tile to the other side. In my case, that is Google Chrome.

Lastly, you can adjust the size of each window or app by clicking and dragging the line between them until it's where you'd like it to be.