Rather than having to click through drop downs and display screens to access your favorite notebooks in OneNote 2016, you can streamline the entire process with just a few clicks.
Open OneNote 2016 and then right click on the tab in your task bar. Your most recently opened notebooks will be listed in the pop-up menu. Click on the push-pin to the right of the notebook name and you now have access to that notebook with only two clicks while you’re running OneNote.
Bonus tip – You can pin multiple notebooks to the taskbar tab if you have a few you use frequently.