Hi Liz,
Our original browser (which we call KidZui Classic) offered parents the ability to manually add or block sites to/from our whitelist. However, I'm afraid our current browser (KidZui K2) does not include this feature at this time. We hope to bring this feature to K2 in the future.
If there's a site that you'd like to see added to KidZui, we'd be more than happy to review it for you. And if you have any further questions about the browser, we invite you to contact us directly via the help section on our website.
Thanks for using the browser!
Dustin
KidZui, Inc.