We saw in the post before that you can split the screen in Windows 10. We can do the same thing in MacOS … just click and hold the full-screen button.
If you drag a Windows against one side of the screen or another it snaps. That Window will get resized to half of the screen leaving the other half with a thumbnail list of the other open apps.
You can split the screen with 2, 3 or 4 apps at once. Use Window key + arrows to split your apps. Hope it helps.