We don't support this functionality at the moment, but I have submitted a feature request on your behalf. Here's the link to PITS,
where you can vote for it and track its progress.
the Telerik team
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items