Google Apps Calendar 'public'
We have a calendar which we make public but have just been informed that it only shows 'Busy' for all the events in it for anyone not in our domain.
In the settings for the calendar, there is a dropdown where supposedly we can choose how visible to make it but the only option visible is 'See only Free/Busy'.
I've checked in the domain settings for calendar and we have 'Share all information, but outsiders cannot change calendars' selected.
So, why can't we make it visible properly? Any other Google Apps users have any ideas?