A family of Microsoft products that enable users to capture, organize, and reuse notes electronically.
Hi Aubrey,
From the description provided, we totally understand your requirement where you want to share the Notebook to the user with the ability to view specific section and edit specific sections in the Notebook. However, when we share the Notebook in the OneDrive or SharePoint, we are sharing it as complete file where the sharing permissions will be applied to the complete Notebook.
Only workaround to meet your requirement is protecting the sections which you already knew it and I do agree with your idea about sharing ability which makes more convenient for sharing the Notebooks. So, I request you add your idea in the OneNote UserVoice platform where the related team will check the ideas provided by the users and take into action based on the availably & more number of votes.
Hope you understand and appreciate your patience. Have a good day and stay safe 😊
Best Regards,
Chitrahaas