[TYPO3-calendar] FE-Users should only be able to enter events for their own calendar not for the calendars they have access

[Pierre Nya]

Hi folks,

i'm searching for the possibility to resolve this problem:
a given FE-User should only be able to enter events in his own calendar 
(private calendar) and not in all the calendars they have access.
Actually in the FE-Edit, he can select all calendar he has access for when 
entering a new event.

Best regards.