To change a menu entry for a page on the Menu, click the Settings link of the Menu element.
In the Settings window on the Menu Entries tab, select the menu entry for the page that you want to re-name.
Type the new name in the Label field.
The original page name will still be used internally for navigation but won't be shown to visitors, they will only see what is being used in the Menu element.
Note: the menu is a template element. When you change the menu on one page, the changes are automatically made on all pages.
After editing the settings, click Save to continue making changes to the element, or click Save & close to save the element and close its Settings window.
Click Cancel to not save any of your changes and close the Settings window.