Группа полей

AddEventHandler("iblock", "OnIBlockPropertyBuildList", array("CIBlockPropertyCustom", "GetUserTypeDescription"));
class CIBlockPropertyCustom
{
    public function GetUserTypeDescription()
    {
        return array(
            "PROPERTY_TYPE"        => "F",
            "USER_TYPE"            => "SERVICE",
            "DESCRIPTION"          => "Фотогалерея",
            "GetPropertyFieldHtml" => array("CIBlockPropertyCustom", "GetPropertyFieldHtml"),
        );
    }

    public static function GetPropertyFieldHtml($arProperty, $value, $strHTMLControlName)
    {
        return '<input type="text" name="'.$strHTMLControlName["VALUE"].'" value="'.$value['VALUE'].'">';
    }
}