diff --git a/booking.emails.inc b/booking.emails.inc
index 9f35b59..e31142c 100644
--- a/booking.emails.inc
+++ b/booking.emails.inc
@@ -34,7 +34,19 @@ function booking_manual_email()
 		'#required' => TRUE,
 		'#default_value' => 'NULL',
 		'#options' => $email_options_array,
-	);	
+	);
+	
+	$form['select-type'] = array(
+			'#type' => 'select',
+			'#title' => t('Pre-Select People'),
+			'#options' => array("---" => "NULL",  "Unpaid" => "Unpaid", "Waiting List" => "Waiting List"),
+			'#default_value' => "---",
+			'#ajax' => array(
+				'callback' => '_booking_manual_email_form_selecttype_dropdown_callback',
+				'event' => 'change',
+			),
+	);
+	
 
 	$header = array(
 		'booking_nid' =>  array('data' => t('Id'), 'field' => 'nid', 'sort' => 'asc'),
@@ -116,6 +128,8 @@ function booking_manual_email()
 		'#default_value' => $values,
 		'#empty' => t('No attendees found.'),
 		'#attributes' => array('id' => 'sort-table'),
+    '#prefix' => '<div id="manual-email-attendees-items">',
+    '#suffix' => '</div>',		
 	);
 	
 	$form['submit'] = array (
@@ -132,6 +146,51 @@ function booking_manual_email()
 	);
 }
 
+function _booking_manual_email_form_selecttype_dropdown_callback($form, &$form_state) {
+
+  //$courseid = $form_state['values']['courseid'];
+  //$scheduleid = $form_state['values']['scheduleid'];
+	
+	$checkboxes = $form_state['values']['table'];
+	$select_type = $form_state['values']['select-type'];
+	$new_default_values = array()
+
+  // generate new default values
+	// @todo use a function for this
+	if ($select_type == "Unpaid") {
+		$new_default_values = array("1814");
+	} else {
+		$new_default_values = array("1815");
+	}
+  //$options = laycoaches_schedule_course_form_schedule_options($courseid, $scheduleid);
+
+  // update cached options for tableselect
+  $cached_form = form_get_cache($form['#build_id'], $form_state);
+  $cached_form['table']['#default_value'] = $new_default_values;
+  form_set_cache($form['#build_id'], $cached_form, $form_state);
+
+  // remove radios from tableselect
+	/*
+  $form['new']['table']['#options'] = $options;
+  foreach (element_children($form['items']) as $key) {
+    if (is_numeric($key)) {
+      unset($form['table'][$key]);
+    }
+  }
+  
+  // add new radios to tableselect
+  form_builder($form['#form_id'], $form['table'], $form_state);
+  // remove current value
+  unset($form['table']['#default_value']);
+  unset($form['table']['#value']);
+	*/
+
+  // update the tableselect
+  $commands = array();
+  $commands[] = ajax_command_replace('#manual-email-attendees-items', drupal_render($form['table']));
+  return array('#type' => 'ajax', '#commands' => $commands);
+}
+
 function booking_manual_email_submit($form, &$form_state) {
  	$counter = 0;
 	$update_messages = array();	
@@ -206,7 +265,7 @@ function booking_manual_email_submit($form, &$form_state) {
 				//increase the counter of people we've emailed
 				$counter++;
 				//store info about the email
-				$update_messages[] = $message;	
+				$update_messages[] = $message;
 			}		
 		}	
 	}