Hi Nir,

Thanks so much for your interest in Amelia. 

With Google Synchronisation, all employees in Amelia can sync their working schedule with their Google Calendar. Each appointment booked in Amelia will be added to their Google calendar with the customer added as a participant. If Employee already has events in Google calendar marked as busy, those will not be available for booking in Amelia - this will prevent overbooking. Rescheduling, cancelling or deleting the appointment needs to be done in Amelia. Suppose you reschedule the appointment in Google Calendar. In that case, that will not reflect in Amelia, but if you reschedule the appointment in Amelia, it will be updated in Google Calendar as well.