OneNote Gem Add-Ins

Open Notebook from the Mac OneNote Main Menu

In the menu bar at the top of the Mac's desktop, click Microsoft OneNote File menu -> Open Notebook
Or press the Command + O key.

Choose Notebook under Account to Open

In pop up Microsoft OneNote window:

1. Click “Open”
2. Click on a OneDrive of a Microsoft account.
3. It will then list the notebooks under the account. Select a notebook.
4. Finally, click the "Open" button in the bottom right corner to open the notebook.

 
If the account you need doesn't exist, you can add a Microsoft account by clicking the "Manage Storage Accounts" button in the bottom left corner.