Calendar Event does not appear in Calendar/work schedule

Hello,

I have created calendar event,

I have created oragnization trees and I have had "coverage" the organization tree by including the parent:

I have included the "calendar event category" into the "work schedule" in "Exceptions" section.

And still, calendar events do not appears.

Have I forgottent a critical step? If yes, please tell me which one?

Thanks,

Sylvie