This is an example in which people who have a different website for either their holiday rentals or to just use a drop down menu in the navigation to point them to another website.
1. Create A New Page Under Which Menu you would like to show the Page Under by creating is as a Shared Navigation Page.
2. Once you've created the page, make sure that you have a Name Inserted. The Link Url section is where you put the redirection in, so that if they click on the link they will be sent to the website. Make sure there is a date in which the Publish from as that would make it live from what date you put in.
3. Once you have done that, click save and go normally to your website which should show a drop down of the page you have created and as soon as they click on it, it will redirect.