freescout-whmcs-module/Config/config.php

<?php

return [
    'name'    => 'LJPcWHMCSModule',
    'options' => [
        'whmcs_base_url'       => [ 'default' => '' ],
        'whmcs_api_identifier' => [ 'default' => '' ],
        'whmcs_api_secret'     => [ 'default' => '' ],
    ],
];