So the organizer of the Meeting can invite external users, Guests and visitors directly from the Outlook Add in or from the Booking form on Room Manager Site.
Invitation send from the Booking form in ROOM MANAGER site
Invitation Email send from RM Outlook Add in
Guest, Visitor with Google Email Account receives the invitation
Guest, Visitor can “accept”, “deny” or maybe” the invitation
The reply is send back to the Organizer/Owner of the event
The guest, visitor can add the event to his Google calendar
Google Map and Directions to the event location is added to the invitation email