four hours

Dietmar sent a note to the CAO supervisors. He said that if one wanted to cancel a CAO opening or close early that he wanted notice done four hours in advance. Similarly, he would ask that members visiting give notice of cancelling.

Sounds like members are getting caught out. Arriving at the CAO and there's no one there. And supervisors are hanging around the CAO expecting someone to show up, and no one does. Unpleasant.