WP Configurator Pro Plugin

If you want to add more custom fields for the Quote Form. You can add this code to your functions.php child theme on the backend.

add_action( 'wpc_quote_form_field_before_message', 'wpc_quote_form_field_before_message' );
function wpc_quote_form_field_before_message() {
    ?>
    <div class="wpc-field-group">
        <input type="text" name="wpc-country" value="" placeholder="<?php esc_html_e( 'Country', 'textdomain' ); ?>">
        <span class="error" data-notice-country="true"></span>
    </div>
    <?php
}
add_filter( 'wpc_quote_form_mail_post_values', 'wpc_quote_form_mail_post_values' );
function wpc_quote_form_mail_post_values( $values ) {    
    $values['country'] = isset( $_POST['wpc-country'] ) ? $_POST['wpc-country'] : '';
    return $values;
}
add_action( 'wpc_quote_form_field_validation', 'wpc_quote_form_field_validation', 10, 2 );
function wpc_quote_form_field_validation( $values, $errors ) {
    if ( empty( $values['country'] ) ) {
        $errors->add( 'country', esc_html__( 'Country field is empty.', 'textdomain' ) );
    }
}
add_action( 'wp_footer', 'wpc_wp_footer', 10, 2 );
function wpc_wp_footer() {
    ?>
    <script>
    (function($){
        $(document).ready(function ($) {
            wpc.add_action(
                'wpc_quote_form_field_error_notice',
                function ($form, errorData) {
                    if (errorData.country) {
                        $form
                            .find('[data-notice-country]')
                            .text(errorData.country[0]);
                    }
                }
            );
        });
    })(jQuery);
    </script>
    <?php
}