Adding a dropdown to a StaffHolder...

StaffHolder.php

<?php

class StaffHolder extends Page
{

  //...

	public function getCMSFields() {
		$fields = parent::getCMSFields();

		$blob = new DropdownField(
			'EmployeeOfTheMonthID',
			'Employee of the month',
			 $this
			 	->Children()
			 	->filter('ClassName', 'StaffPage')
			 	->sort('Title')
			 	->map('ID', 'Title')
		);
		$blob->setEmptyString('(Select)');

		$fields->addFieldToTab(
			'Root.Main',
			$blob,
			'Content'
		);


		return $fields;
	}

}

// ...

StaffHolder.ss

<% if EmployeeOfTheMonth %>
<h2>Employee of the month is 
	<a href="$EmployeeOfTheMonth.Link">
	$EmployeeOfTheMonth.Title
	</a>
</h2>
<% end_if %>

<!-- ... rest of file goes here -->