Hey @daniellanger,
Thanks for hanging in there!
The purchase order tool covers incoming inventory that replenishes stock and is only available to our SaaS customers. The Shipping plan is a SFAPP feature to tell us what products you intend to ship, the quantities, and which shipping method you will use.
I’d highly recommend checking out our articles at https://software-help.shiphero.com/ for more detailed explanations and examples regarding these features.
Please let me know if you have any questions or concerns.
Best,
RayanP