Overlapping

Block availability if overlaps with personal events

Busy events in a personal Google Calendar will block the availability of the service. A personal Google Calendar which is different from the source one, must be set for this to work.

Block availability if overlaps with reservations for the same service

If you are using multiple calendars as availability source for the same service, activating this setting will ensure that overlapping availabilities are excluded as soon as a reservation is done. Only valid if the calendars are not independent.

Block availability if overlaps with reservations for other services

Activate this to block all the other overlapping available slots as soon as one of them is booked.