Depending on the courier, one to three delivery attempts will be made. If the consignee is not home to receive and sign for the shipment, a notice will be left at the door advising if another delivery attempt will be made or where it will be held for customer pickup. 

Once a package is in transit it is not possible to add or remove a signature requirement by the shipper. 

TIP:  Add your receiver's email address when creating a shipping label, as they will get a notification advising them when a shipment is out for delivery. As the receiver (depending on the courier), they can make delivery adjustments such as