To link a page, hover over the page and click on the pencil icon in the top right corner. Select the Link option from the dropdown menu.
Type or paste the URL of the website you wish to link to. When finished click Save changes.
Now when clicking on the page you will be redirected to the website you linked to, instead of a page on your site.
For more help, view the video below:
It is best practice to link to external sites using links within the page itself, not on a menu item, so use this sparingly as it could confuse users. It is recommended to only link menu items to sites that you manage, for example your online shop portal.