CCalendar::SetDisplayedSuperposed

static function SetDisplayedSuperposed($userId = false, $idList = [])
{
	if (class_exists('CUserOptions') && $userId)
	{
		$idList = array_unique(array_map('intval', $idList));
		CUserOptions::SetOption("calendar", "superpose_displayed", serialize($idList));
		BitrixCalendarUtil::addPullEvent(
			'change_section_subscription',
			$userId
		);
	}
}