So you and your coworkers have a shared notebook setup to discuss different todo items, meeting notes and project plans. OneNote is a great place for you to share all of this information; it syncs seamlessly and you can take it offline. One thing that you might not have known about is a set of features to help you find what content you haven't read or items that are new. If you go to a shared notebook and click on the View menu you will see this:
There are a variety of options which help you see different content in a shared notebook. These features will bring you into a new search scope where you can see the pages that you haven't read yet or you can view all of the pages which changes in a certain time period. These features will help you see what has been going on in a shared notebook and where the action is. Check them out!