In order to setup redirects, please follow the steps below.
Navigate to the Website tab in your Unstack main menu and click on the 3 dots symbol to the right of the page you are wanting to redirect to. After clicking the 3 dots symbol that pages settings will open.
Replace the current URL of that page with the URL of the page you are wanting to redirect from, then click the Save button.
Access that same pages settings again, replace it with the URL you want the old page to be redirected to, then click the Save and Publish button.