It's a simple operation to change an existing page to a "redirector" page type (which forwards the link to a different URL either inside or outside the website).
Unfortunately, an upgrade to our CMS software recently walled-off this capability from normal content creators. It now has to be done by a system administrator.
Please put in a ticket with the URL of the current page and the page you wish it to forward to and we will complete the operation for you.
Sorry for the inconvenience.