Group Name — Enter the name of the customer group.
Show prices with/without tax — Select whether to display prices for customer groups with or without tax already added.
Tax Exempt — Select "Yes" if this customer group is exempt from taxes.
Payment Modules — Select "Set payment modules for the customer group" to choose different payment modules for each customer group. Select "Use settings from Configuration" to use the same payment modules for all customer groups.
Shipping Modules — Select "Set shipping modules for the customer group" to choose different shipping modules for each customer group. Select "Use settings from Configuration" to use the same shipping modules for all customer groups.
Edit
Edit the selected customer group.
Delete
Delete the selected customer group. Note that you cannot delete the "Retail" customer group.