How to create a OneNote notebook from Teams
This artical shows you how to create a OneNote notebook from Teams
Most team channels come with a pre-created OneNote note book. If your teams does not have one created please follow the instructions below
To add a new or existing OneNote notebook to a channel in Microsoft Teams, select Add a tab at the top of the channel and select OneNote.
Select Create a new notebook, add a name to the Notebook name field, and click Save. To add an existing notebook, select from the list of notebooks, choose the notebook and section, and select Save.
Once you add the OneNote tab, everyone in the channel will be able to view and make edits (provided they have access to the notebook). Anyone blocked from viewing the notebook can request access right from the tab.