There are several ways to do that:
1. Create an external page, and point it to your page. This way, you can access the page from the external page link, or from your actual page url.
2. Create additional Url. This way you can have several URLs for referencing this page
3. Programmatically create one more item in your navigation control, and this item should point to your page.
Let me know if I am missing something.
the Telerik team
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