public function getCMSFields()
 {
     $fields = parent::getCMSFields();
     $fields->addFieldToTab('Root.Main', DropdownField::create('ApplicableDays', 'Schedule Day Type', array('Mon,Tue,Wed,Thu,Fri' => 'Weekdays', 'Sat,Sun' => 'Weekend')));
     return $fields;
 }
 public function getCMSFields()
 {
     $fields = parent::getCMSFields();
     $fields->removeByName('ApplicableDays');
     return $fields;
 }