If you need to update your preferences for all orders going to a specific location, go to your Addresses and edit the location. On the top right of the page, you will see 'Delivery Instructions'. You can update the delivery contact there.
If you need to update just one specific order, please contact our Customer Care Team via our contact form, including your Just Eat for Business order number and the name and contact number of the new delivery contact so that we can update the order on your behalf.