When you take notes during a group meeting, you probably can’t catch everything people say. The trick is to share your notes so others can take notes together with you. Shared note-taking during meetings lets everyone focus on a particular subject and document its time in the discussion. At the end of a session, everyone is quite literally on the same page.
Sharing notes during a meeting isn't possible in OneNote Online, but you can use the OneNote desktop app to do so. For detailed steps about how to do this in OneNote 2016, see Share notes during a meeting.
Note: You can still share your notebooks for normal co-authoring. For more information, see Use OneNote Online to share notes with other people.