title: Add appointment to calendar through Exchange programatically
body: <p>How can I add an item to a users calendar programatically through the Exchange 2003 Information Store.  I need to know the interface or connector to research. I have full Exchange rights and want to be able to automate assigning appointments without the end users interaction or login.  I know this is possible as I have a 3rd party enterprise app that does this very thing.</p>
  
  <p>Any guidance would be very much appreciated.</p>