You have a few options for customizing your packing list. These settings can be found under Settings / Orders
Packing List Template - Select either the default packing list or the compact list. The compact list is designed to save on paper but might be less readable than then default template.
Printing Mode - By default GrazeCart will attempt to use a single sheet of paper for each order. If you'd like, you can select Print Continuously and GrazeCart will try to save paper by printing as many orders as it can fit on a single piece of paper.
Order Items Sorting - This setting control the order items will appear on the packing lists and invoices, as well as the order manager screen. Use Order Items Sorting 2 for a second level of sorting.