You can share your Outlook calendar with anyone who has an email address, even if they don't use Outlook.

You can unshare your Outlook calendar if you want to remove someone from a previously shared calendar.

I have noticed in Outlook I can view the details of meetings of some users on the network, but some I can just view their blocks of taken time. My Account has Exchange admin rights, I am curious as to ...

In EMC/Mailbox/Sharing Policies I have *:CalendarSharingFreeBusySimple with Enabled:True and Default:True Yet in Outlook 2010 SP1 or in Outlook Web App if I go to my Calendar and try to share it with ...