Split Screen
How do I get Numbers and Safari to open in split screen?
iMac 27″ 5K, macOS 13.6
Question marked as
The same concept will work with a Safari window and a Numbers window.
Open Safari and Numbers
Select the green button of the Safari window and tell it on what side it should go
Select the green button of the Numbers window and you will have your split screen.
That's how it works with Monterey