ScheduleOnce Google Calendar Add-on enables you to take control over your meetings schedule without having to send time-consuming emails or to make unnecessary phone calls. Finding a common time for a meeting with ScheduleOnce is a very simple process:  · the organizer sets tentative availability for the meeting  · invitees reply with their tentative availability  · the organizer evaluates invitee replies and schedules the meeting ScheduleOnce was specifically designed to integrate with Google Calendar, and can be used directly from Google Calendar. Once your Google Calendar is connected, your busy time is constantly synchronized with ScheduleOnce so you don’t have to worry about double-booking.NOTE: The ScheduleOnce add-on is cross-platform and it works on Mac OS X, Windows and Linux.Requirements:

Ссылка: http://releases..b/mozilla.org/addons/12871/scheduleonce_add-on-1.1-fx.xpi