Yes, it's easy to create a multi-piece’s shipment in Circle.us.
Step 1: Please go to “Orders” and click “Create Order”.
Step 2: Please fill in your Customer Information-Click “Save&Ship”
Step 3: Click “Add Package”-enter your package information and choose “Service”-Create label.
Please note that FedEx and UPS support multi-package shipments, but USPS is not available for multiple packages.
The labels will be created and downloaded to your computer.