<? if (!defined('B_PROLOG_INCLUDED') || B_PROLOG_INCLUDED !== true)
    die();
$parentResult = $this->getComponent()->GetParent()->arResult;
$arResult['MENU_ITEMS'] = $parentResult['ITEMS'];
if (!empty($parentResult['ITEMS'])) {
    $arResult['MENU_COLUMNS'] = array_chunk($parentResult['ITEMS'], ceil(count($arResult['MENU_ITEMS']) / 3));
}