The packing slip pdf is designed using “style sheets transformation (xslt)” which is relatively technical. However, if your aim is to make basic adjustments, being unfamiliar with xslt may not be an issue. The style sheet included with the installation can be found in Templates folder: “C:\Program Files (x86)\Difo\Iris3\Templates\ExchangeOut.xslt”.
If you want to make changes to the style sheet transformation, you can copy the original file to a writable folder, open the file in style sheet editor OR notepad. When finished, add the new file in the “Definitions/Custom templates” screen*. If you want to make major adjustments, please get in touch.
*If you are using a version older than 3.4.4, you would need to copy the new template file to the folder: C:\Program Files (x86)\Difo\Iris3\CustomTemplates\