
To rename a page, just edit the Page Title. You do not have to Edit a Page to edit the Page Title. Just hover your mouse over the page title and press Edit. Then edit the title in the Page Title box.
NOTE: There is a link to the right of the title which indicates if the TItle is synced to the URL. If it is synced, then when you change the Title, it will change the URL and move location in the Navigation Pane. Please be cautious and DO NOT sync the Title to the URL unless you really feel the page should be moved.
If you wish the name to appear differently in the URL and the Navigation Pane, you can press the red Sync button on the right of the Page Title box to keep the page title and URL in sync. Or you can edit the URL in the URL box. When you are done, just press the Update Title button.