After installation, open the module settings. You will see the following configuration fields:
COD Fee Amount
Enter the fixed amount that should be added when customers choose COD.
Minimum Order Subtotal
The COD fee will only apply if the cart subtotal is equal to or greater than this amount.
Set 0 if no minimum condition is required.
Maximum Order Subtotal
The COD fee will only apply if the cart subtotal is equal to or less than this amount.
Set 0 if no maximum condition is required.
Sort Order
This controls where the COD fee appears in the order totals list.