Hello Steve, and thank you for posting to our community!
While we do not currently have a shipping rule option for Line Item Quantity, we do have an option for multiple quantities on packing slips.
That option is a Shipment Line Item variable called:
- qty_multiple: a "diamond" image - only displayed if qty is greater than 1
That variable can be added to your Shipment Line Item code using the instructions in the link below under the section titled "Shipment Line Items:". It will create a diamond image if the line item quantity is greater than one, to help it stand out for you.
I hope that helps, and I've also added your shipping rule suggestion to be considered for our future development.
If we have any updates, we will post the updates to this feature request here! Thank you very much for your feedback, it helps us learn more about what features our merchants need.
Thank you and happy shipping!