How do I RSVP to an event?

• Click on the events tab from the main timeline and click on the event in the list under Public or if it's a private event, click on the My Invites tab and select the event in the list.
• Then on the events page, click on the RSVP icon.  
• The circle will turn green to indicate you have RSVP'd to that event. 

Note: Not all events allow RSVP.  Depending on the event owners preference and the type of event.