For shipping established by formulas you enter, configure the product catalog block used for checkout and select "Set by Formulas You Enter" as the Shipment Charge Calculation.
The "Handling charge per order" is ignored. If you want a charge per order, enter it into the formulas.
This charge will appear as "Shipping" in the cart's subtotals.
Once you have saved a product catalog with this setting, re-enter its configuration screen and there will be a Shipping Calculations link at the top.