Points: 18

And Ken, during development phase, if you want to hide the site from visitors, you can use Maintenance Mode plugins so that only logged in users (mostly developers in this scenario) can access the site, others will see a landing page saying that your site is in maintenance mode. There are lots of plugins for taking your site to maintenance mode. This one seems to have a good rating: https://wordpress.org/plugins/wp-maintenance-mode/

You can always take a published page to draft mode. Please see the picture below, I hope you will easily understand.
Change Page Publish Status