Do Not Calculate Setting - For Flat Rate

Located under Ecommerce/Shipping Methods -> Shipping Methods Editor/General Section/How to Calculate Charges Menu

Overview:

• Choose between: 
  
  • Don't Calculate a Charge Amount - *Use for Flat Rate
  • Calculate with a Shipping Carrier's Online System - Use for USPS, UPS or FedEx Look Tool
  • Create Your Own Custom Calculation - Choose this to set your own custom shipping pricing.