A family of Microsoft products that enable users to capture, organize, and reuse notes electronically.
Hi Matthias,
Thanks for writing back to us and sorry for delay response.
Creating a Class Notebook is easy way and it will be done in few steps, you can refer to this article: Create a Class Notebook in OneNote, to create it.
After creating a Class Notebook, you can distribute the pages from old Class Notebook to New Class Notebook by referring this article: Distribute Class Notebook page and sections.
Thanks,
Chitrahaas