Once you've added a fair bit of Pages to your site, you may want to rearrange the Folder/Page structure to help your visitors navigate easier. To do so you'll use the ✥ Move button at the top of the Page Edit screen.
From the Pages tab, click on the page who's name you'd like to change in the menu.
Click on ✥ Move from the list of buttons at the top-right of your screen.
From the Parent dropdown, select the Folder into which you would like to move your page.
Click Continue.
Your Page will be moved and your changes have been saved.