Some newbee questions about BuddyPress Group Calendar

I have just installed Group Calendar plugin, seems all works fine, but I not found some features I needed:
1. is there a way to do comments for exact event?
2. is it possible to schedule email notifications for upcoming events, for instance "send notifications to all group members 3 days before this event"?
3. How can I insert Event Calendar graphic view on any page, via some shortcode may be?
Thank you.