UserSettings::setTrackingUsers

static function setTrackingUsers($userId = false, $value = [])
{
	if (!$userId)
	{
		$userId = CCalendar::getUserId();
	}

	if (!is_array($value))
	{
		$value = [];
	}
	array_walk($value, 'intval');
	$value = array_unique($value);

	CUserOptions::setOption("calendar", "superpose_tracking_users", serialize($value), false, $userId);
}