How to Use Versions in OneNote
When multiple people are working in a notebook, you can use versions to see who made changes to a page and even restore an earlier version.
Now you see a few different versions listed in the Pages pane.
The earlier version appears and a little note at the top lets you know it will eventually be deleted.
There are a bunch of different options in here like disabling version history and deleting versions from this page, section, or the entire notebook.
A new version of the page is created with today's date.