The Quantity means how many PCBs or Panels you want to order.
For Delivery PCB Type is
Single, input the PCB numbers in
the Single Board Quantity Window.
For the Delivery PCB Type is
Panel, input how many
PCB panels you need. For example, each panel has 2 PCBs, and you
need 20 PCBs, so input 10 in the Panel Quote Quantity Window.