When creating a multi-piece shipment, enter the actual weight and dimensions of the first piece. Then click the “Add Piece” button. This will create an additional piece with the previous piece’s weight and dimensions pre-filled in the fields. If the pieces are all the same size, repeat until you’ve added the correct number. If they have different weights or dimensions, change the parameters as necessary before adding another piece. Your shipment can have a maximum of 18 pieces.