title: Add attendees to iCloud calendar event
body: <p>I am using Event Kit to read and create events. I want to be able to add attendees to such events. But as described in documentation we cannod do that with Event Kit framework:</p>
  
  <blockquote>
    <p>Event Kit provides limited access to a user’s Calendar database; it
    does not include everything that would be desired for implementing a
    full-featured calendar or reminder app, such as adding attendees or
    accounts (<a href="https://developer.apple.com/library/ios/documentation/DataManagement/Conceptual/EventKitProgGuide/Introduction/Introduction.html" rel="nofollow noreferrer">Link to the source</a>)</p>
  </blockquote>
  
  <p>I see that some apps, like <em>Google Calendar</em>, can do that. I think that they are using <em>CalDAV</em> protocol, but I could not find anything about that (documentation, tutorials, other helpfull resources) and I don't know where to start.</p>
  
  <p>Any help would be welcome.
  Thanks</p>
  
  <p>UPDATE:
  Possible duplicate of:
  <a href="https://stackoverflow.com/questions/10853610/add-participant-to-an-event-in-ios">Add participant to an event in iOS</a></p>
  
  <p>Anyway, I will try to post here my research updates.</p>