This integration allows your support team to check order status right from your Zendesk ticket system, so they can easily handle customer's questions without clicking elsewhere for shipping details, a much more efficient and better post-purchase service.
Here is the instruction
Go to your Zendesk Admin Center → APPS → Marketplace → search or filter to find Parcel Panel
Click Install button → copy ParcelPanel API Key in Integration tab of ParcelPanel admin → paste and click Install button
Then your support team can check order status right from your Zendesk ticket system.