Click on the section containing the page you want to move from the
dropdown menu. This will bring up a listing of all the pages within that section.
Click the MOVE BUTTON next to the page that you want to move.
Where to move the page
This will bring up a list of your site sections. Click in the section where you want to move this page.
A page will then ask you if you are sure you want to move the page. If you select YES, then the page will be moved.
Why would you move a page?
1) The number of posts in the category is already at the limit and you want to create new posts.
You no longer want the page visible to the visitors. You do not want to
delete the page, so you want to move it to your Hidden Page Section.