Here's how we do the delivery, I did it last year:
At BBHQ, boys gather in a room and when the I/C receives a order,
he will despatch 1-2 boys to a taxi waiting at the entrance. Boys
load goods onto taxi, we receive the invoices and off we go.
The invoices have the recipient's address. Once the person receives
the goods, we ask them to sign on the invoice to acknowledge. Then
we proceed to the next one. If the recipient is not at home, we
skip and proceed to the next location.
At the end of delivery, taxi brings us back to BBHQ, we unload
goods and give the invoices to the I/C.
I got to board a Mercedes taxi for the delivery. 
