You can generate packing slips automatically at the time of shipping.
To configure automatic packing slips:
1. Click Settings --> Stores --> Invoices-Packing Slips.
2. Under the Packing Slips section select the kind of Packing Slip desired (Regular or Gift).
3. Then click save.
That's it! Now when you generate a shipping label, the appropriate Packing Slip will automatically be generated and printed to the specified printer you have set up in OrderCup.