Use the "External URL" feature to add links to other websites in your website's navigation menu. In order to add links to other websites to your website's navigation menu you must first add a new page (see "Add a Page" (link) help pages for info on how to add a new page). Once you have added the page, click on the "Other Settings" tab when editing the page settings. Then enter the URL (web address) of the website or web page you wish to link to into the "External URL" text box and click the "Save Changes" button.