Create And Organize Quick Notes Unfiled. Quick Notes lets you make notes on the fly which are accessible at the launch a new tab. You cant really delete it - OneNote will just keep recreating it.

Create a Quick Note in OneNote. Whenever you need desk space all you need to do is pick up the whole basket place it nearby then use the whole desk. Click on the note that you want to open.
Click on the note that you want to open.
Create a Quick Note when OneNote isnt running. There is no shortage of organization tools but sometimes the simple solution is the best. Move Unfiled Notes pages to another section. Tap Create Subject or Create Divider.