Add

CModule::IncludeModule("iblock");
$BID = 6; // указываем инфоблок

// Запрос секций
$rsSection = CIBlockSection::GetList(Array("SORT"=>"ASC"), Array("IBLOCK_ID" => $BID), false);
   while ($section = $rsSection->GetNext())
   {      
      $arSections[] = $section;      
   }      
   // Скрипт создания групп форумов
   CModule::IncludeModule("forum");

// ID родителя   
$lastForumGroupId = 0;
   foreach($arSections as $section) 
   {
      if (intval($section["DEPTH_LEVEL"]) == 1)
      {
         $forumGroupId = 0;      
      }   
      else
      {
         $forumGroupId = $lastForumGroupId;
      }   
      
      
      $arFields = array(
         "SORT" => $section["SORT"],
         "PARENT_ID" => $forumGroupId   
      );
      
      $arFields["LANG"][0] = array(
         "NAME" => $section["NAME"],
         "LID" => "ru",
         "DESCRIPTION" => $section["DESCRIPTION"]      
      );
      $arFields["LANG"][1] = array(
         "NAME" => "EN_NAME",
         "LID" => "en",
         "DESCRIPTION" => ""      
      );   
      
      
      if ($ID = CForumGroup::Add($arFields))
      {
         echo "Добавили группу ".$section["NAME"].", родитель - ".$forumGroupId." <br />";   
         if (intval($section["DEPTH_LEVEL"]) == 1)
         {
            $lastForumGroupId = $ID;      
         }         
      }      
      else
      {
         echo "ERROR!<br />";
      }      
}