If a driver is not carrying a shipment, the Next button can be tapped. The driver will be shown a No Current Shipments dialogue and will be asked to confirm.
When adding shipments, the screen has two sides: current shipments and add shipments.
To add a shipment:
Tap Shipment ID. Type in the shipment ID and tap enter on the keyboard.
The new shipment will appear under Current Shipments.
To remove a shipment, tap the box next to the Shipment ID and then tap Remove.