+ {
+ 'key' => 'allow_negative_charges',
+ 'section' => 'billing',
+ 'description' => 'Allow negative charges. Normally not used unless importing data from a legacy system that requires this.',
+ 'type' => 'checkbox',
+ },
+
+ {
+ 'key' => 'system_usernames',
+ 'section' => 'username',
+ 'description' => 'A list of system usernames that cannot be edited or removed, one per line. Use a bare username to prohibit modification/deletion of the username in any domain, or username@domain to prohibit modification/deletetion of a specific username and domain.',
+ 'type' => 'textarea',
+ },