A family of Microsoft products that enable users to capture, organize, and reuse notes electronically.
Hi Fei Ying (fying),
When we create a new notebook in OneNote for Mac, the only available option is to choose save it to personal OneDrive or OneDrive for business, it is not available to choose which folder to save when creating it. Thanks for your understanding.
(Although we can manually move the notebook later, it is not the best practice as it may cause potential sync issue, we don't recommend doing by this way.)
As a workaround, you can go to the folder in OneDrive where you want to save the new notebook, directly create the notebook in OneNote online, click "+ New", select OneNote notebook.
After that, you can open the notebook in OneNote client by opening it in OneNote online>click Open in OneNote button in the ribbon or go to OneNote client, click File>Open Notebook and browse to the notebook.
Best Regards,
Tina
[Updated by Tina Chen MSFT, February 1st, 1:54 AM]