Normally this page would contain all relevant documentation. We will work towards that over time. For the moment, I’ve added what we covered on 9/13/18:
9/13/18: 1) To remove a page and save for later, change to draft status in upper right Publish box. 2) If it is in the main menu, go to Appearance Menu, expand the arrow on the right of that page, and remove. 3) when you resurrect that page for next year, change title year to 2019, and also change the permalink, right below the title, to 2019, OR remove the 2019 so it is a page without a date in the URL, either approach fine.