One of the ways to get more out of OneNote is to use it to focus on the work at hand. A quick method of getting the other stuff out of the way and concentrating on the page you’re working on is to use full page view. By clicking on the double arrow in the upper right, you can hide all the unnecessary OneNote buttons and bars until you need them again. I use this option all the time in meetings and when writing to help me stay on task.
Using full page view in OneNote to focus on your work