There is no way for you to achieve this functionality. Only backend users have permissions for Inline editing. I have logged a feature request for this particular option. You can follow its progress in our Portal
. We will do our best to include it in our future releases.
Ivan D. Dimitrov
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