Customer Group

• Enable – Enable/Disable extra fees based on customer group.

• Customer Group – Select customer groups to charge extra fee.

• Payment Extra Fee Type – Select the type of extra fee for customer groups from fixed, percentage, combined, or fixed minimum.

• Payment Cost – Set the extra fee amount depending on the type selected in the above field.

• Group Extra Fee Title – Set custom title for customer group extra fee.

You can see that the customer group extra fee is applied in the front end as per your backend settings.