+ 'key' => 'tax-cust_exempt-groups-num_req',
+ 'section' => 'billing',
+ 'description' => 'When using tax-cust_exempt-groups, control whether individual tax exemption numbers are required for exemption from different taxes.',
+ 'type' => 'select',
+ 'select_hash' => [ '' => 'Not required',
+ 'residential' => 'Required for residential customers only',
+ 'all' => 'Required for all customers',
+ ],
+ },
+
+ {