Two Months option

Hi

I added “two months” option. I just want to know is this the only place in the code to add the settings?

public static function get_expiry_duration($key = '') {

        $expiry_duration = array(
            '3_days' => array(
                'value' => DAY_IN_SECONDS * 3,
                'label' => __('Three Days', Wp_Temporary_Login_Without_Password_i18n::$text_domain)
            ),
            'day' => array(
                'value' => DAY_IN_SECONDS,
                'label' => __('One Day', Wp_Temporary_Login_Without_Password_i18n::$text_domain)
            ),
            '3_hours' => array(
                'value' => HOUR_IN_SECONDS * 3,
                'label' => __('Three Hours', Wp_Temporary_Login_Without_Password_i18n::$text_domain)
            ),
            'hour' => array(
                'value' => HOUR_IN_SECONDS,
                'label' => __('One Hour', Wp_Temporary_Login_Without_Password_i18n::$text_domain)
            ),
            'week' => array(
                'value' => WEEK_IN_SECONDS,
                'label' => __('One Week', Wp_Temporary_Login_Without_Password_i18n::$text_domain)
            ),
            'month' => array(
                'value' => DAY_IN_SECONDS * 30,
                'label' => __('One Month', Wp_Temporary_Login_Without_Password_i18n::$text_domain)
            ),
            '2_month' => array(
                'value' => DAY_IN_SECONDS * 60,
                'label' => __('Two Months', Wp_Temporary_Login_Without_Password_i18n::$text_domain)
            ),            
        );

        if (empty($key)) {
            return $expiry_duration;
        } elseif (isset($expiry_duration[$key])) {
            return $expiry_duration[$key];
        } else {
            return;
        }
    }

Thank you for your help