The redirect function allows you to take the testers to a different website during your test fast and easy. You can, for example, show a different version of the site to get their opinion, or redirect to a competitor's site to compare or get more insight.
Consider telling the testers that they are about to be redirected to avoid confusion when another site is opened. The testers will see your text before they are taken to the new site.
Put in the URL address of the website you want to redirect to and it's all set.