Show blocked timeslot but without details to unregistered


is there any possibility to make the reservation details (title and text) unvisible for the not registered users?
By meaning: for all not registered users it will be visible that particular timeslot is “booked” with the standard styles color, but without showing username of the user who did the reservation and text of scheduled event?

I think I will have to do it within the code, or maybe there is a “easy” way how it can be configured within the configuration option via joomly admin back-end? (within the filed with configured: components -> schedule -> templates -> Event templates


return (event.username ? event.username + ': ’ : ‘’) + event.text;


Thank you for any hint!
Best regards