The process for entering multiple tracking numbers is as follows:
1.) Go to Enter Tracking Number page found under Tax & Shipment Management section of the left side navigation menu.
2.) Find the appropriate order and click on the Multiple link to the far right under the Tracking Number column. A small popup should appear.
3.) Enter the multiple tracking numbers and services as necessary. Click Save. The popup should close and the multiple tracking numbers should be entered into the Tracking Number column on main page in a "formula".
4.) Choose a ShipCode on the main page, and click the Save button at the bottom of the page. Note: If you are entering multiple tracking numbers for different shipping services (Ex: one is for UPS and one is for Fedex), just choose any ShipCode on the main page. This should post the tracking numbers.