For shared Shuttle services, in order to book a different number of passengers for both journeys you will have to make two separate one way bookings to cover your full route.
If you book a Private transfer service, just book for the maximum number of people travelling on any one of the journeys or make one booking for each journey. If you wish to amend the amount of passengers on each transfer leg, you can enter My booking and process the change free of charge up to 48 hours before the transfer time.
Transfer changes can not be accepted through My Booking within 48 hours of travel, please contact Customer Service via Live chat if you need to request an urgent change to your transfer. Just click on the help button at the bottom of any page on our website to chat now.