How to make a menu of one category in Bitrix?

Question

1C-Bitrix

Infoblock standard catalog

Task - here is a section /catalog/apple
. In this section, I add an include area, insert a new menu there, and I want it to generate a list of child categories /catalog/apple/iphone, /catalog/apple/ipad, / catalog/apple/mac (etc)

It is clear that you can manually add changing elements to this, but it is necessary that it be automatically displayed.

I tried following the example of connecting menu.ext type -

<?
if(!defined("B_PROLOG_INCLUDED") || B_PROLOG_INCLUDED!==true)die();

global $APPLICATION;
 
   $aMenuLinksExt = $APPLICATION->IncludeComponent(
  "bitrix:menu.sections", 
  "", 
  array(
    "IS_SEF" => "Y",
    "SEF_BASE_URL" => "/catalog/",
    "SECTION_PAGE_URL" => "#SECTION_CODE#/",
    "DETAIL_PAGE_URL" => "#SECTION_CODE#/#ELEMENT_CODE#",
    "IBLOCK_TYPE" => "1c_catalog",
    "IBLOCK_ID" => "15",
    "DEPTH_LEVEL" => "3",
    "CACHE_TYPE" => "A",
    "CACHE_TIME" => "3600"
  ),
  false
);
$aMenuLinks = array_merge($aMenuLinks, $aMenuLinksExt);
?>

As a result, it displays the full menu from the very first categories, but you need exactly the menu of subsections of one category