Front End Calender Management

Employees must be able to manage their calenders from the front end.

I created a menu item Type "Employee layout: List all appointments of employee" I logged onto the front end as that employee, selected that menu item, and was taken to the "My working calender" page. I entered a date range in which I know there are two appointments, hit the filter button, and get a "No Work Found"

Anyone have a clue on this ?

The employee can manage their work in the frontend, but only the works in the future data, not in the passe date.
Thanks
Dam