$this->show_holidays = in_array('show_holidays', $config_array);
$this->punch_mode = in_array('punch_mode', $config_array);
$this->allow_overlap = in_array('allow_overlap', $config_array);
$this->show_holidays = in_array('show_holidays', $config_array);
$this->punch_mode = in_array('punch_mode', $config_array);
$this->allow_overlap = in_array('allow_overlap', $config_array);