How do I ship an order with a tracking number?
Visit Admin > Order > Order.
Select an order, which is done by clicking its number in the Order Number column, and you can view the order invoice.
At the bottom of the page, you can change the order status from the Status (drop-down list)
To assign a tracking code, just input text into the Tracking Number field.
To update changes to the order and finish, click on the Update Status button.