Once a shipment is packed you can email the packing slip straight from Brahmin Solutions.
Send it by hand
Open the order and click the Shipment tab.
Click the shipment.
Click Send.
Send only appears once the shipment reaches Packed. Before that there is nothing settled enough to send — quantities can still change.
Send them automatically
Packing slips can go out on their own as each shipment is packed, so nobody has to remember. That is switched on in your settings rather than on the order.
Fill the tracking number in first
Under Shipment details there is a Tracking # box. Fill it in before you send, and the customer gets the tracking reference with their slip instead of emailing you to ask for it.
Just want a copy?
Use Print instead. That gives you a PDF to keep or hand to the driver, without emailing anyone.