You can for example create a special section of your web site, which protected.
1. Create a http://yoursite.com/tests page group
2. Every page under this section should be denied for anonymous visitors
3. Create a new page with the templates you have uploaded. If everything is fine, move forward and apply the new masterpages to your pages.
Don't hesitate to contact us if you have other questions.
All the best,
the Telerik team