Need to inform your shipping/delivery department on how to handle a specific order? Then leverage the "Add to Packing Slip" note in order to add notes to the bottom of the packing slip. To do this, go to an existing order and scroll to the bottom. You will see Order Notes.
Select Add to Packing Slip and then enter your note.
After adding that note, you will now see it show up on the bottom of the packing slip.