Hi Gray,
Thank you for writing.
We don't have this functionality built-in
RadPanelBar and currently there is no way to work around it. Implementing this feature would require quite some time, so we ask you to tell us if this feature is a must for you.
If so, we will consider adding support for it in future versions of
RadPanelBar.
Please write us back if you have any other questions.
Best wishes,
Boyko Markov
the Telerik team