Free/Busy information using exchange srever

I’m evaluating em client at the moment and have it working with exchange server 2010.the calendar show all my appointments etc, however when I create a new event the scheduler doesn’t show any free/busy info, any ideas? 

Hi Jim, unfortunately free/busy information is currently not available or the feature has issues, this has been reported to the developers and hopefully we’ll see an update to this feature soon.

Thank you, sorry for the inconvenience,