Hi there, @Plebe.

You certainly can batch print packing slips as you do invoices. Let me walk you through some steps. 

1. Go to the Customers menu and select Sales Order Fulfillment Worksheet.
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2. Select all your customers' sales orders from the list.
3. Choose Packing Slips.
4. Click Print.
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That should do the trick. For additional details about this process, check out Use the Sales Order Fulfillment Worksheet.

Please let me know if you have any questions or concerns. I'm always around to lend a hand. Have a good one!