To convert a menu item to link to another website
Want to add a custom link to your main menu?
Click the "Settings" button in the left toolbar. A list of your subpages is displayed with the "Add New Page" button at the bottom. Click there to add a new subpage. When adding, click the "Show more options" button and select "Redirect to URL" from the list there. An input field for an external URL will appear. There will be a new subpage, but when you click on it in the main menu, it will redirect to a different URL.