You can update or change a Metro 3-hour time-slot delivery from within the "Track & Manage" page. In the controls column for the order there will be a Re-Route button. When you click that it will give you options to change details about your order.
Alternatively this can also be done from the tracking page for that particular order.
To update or change a standard deliveries or to change other details for our time-slotted deliveries please email us at email@example.com and one of our team members will give you a hand updating your order.