Unfortunately, this feature has not been implemented, you can see the Feature Request here
in our Feedback Portal. Here you can vote on this feature and subscribe to notifications on its status.
I am sorry for any inconvenience this may have caused.
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 Sitefinity CMS Ideas&Feedback Portal
and vote to affect the priority of the items