CakePHP 1.3 | Selecionar (list) todos os Gerentes do Sistema (Users -> Groups (id = 4))

user.php

<?php
class User extends AppModel {
	var $name = 'User';
	var $displayField = 'name';
	var $actsAs = array('Containable');

	var $belongsTo = array(
		'UserCreate' => array(
			'className' => 'User',
			'foreignKey' => 'who_create',
			'conditions' => '',
			'fields' => '',
			'order' => ''
		),
		'Gerente' => array(
			'className' => 'User',
			'foreignKey' => 'user_id',
			'conditions' => '',
			'fields' => '',
			'order' => ''
		)
	);
	
	var $hasMany = array(
		'PollsPollAnswer' => array(
			'className' => 'PollsPollAnswer',
			'foreignKey' => 'user_id',
			'dependent' => false,
			'conditions' => '',
			'fields' => '',
			'order' => '',
			'limit' => '',
			'offset' => '',
			'exclusive' => '',
			'finderQuery' => '',
			'counterQuery' => ''
		)
	);


	var $hasAndBelongsToMany = array(
		'Group' => array(
			'className' => 'Group',
			'joinTable' => 'groups_users',
			'foreignKey' => 'user_id',
			'associationForeignKey' => 'group_id',
			'unique' => true,
			'conditions' => '',
			'fields' => '',
			'order' => '',
			'limit' => '',
			'offset' => '',
			'finderQuery' => '',
			'deleteQuery' => '',
			'insertQuery' => ''
		)
	);

	public function beforeSave() {
		if(isset($this->data['User']['password'])) {
			$this->data['User']['password'] = AuthComponent::password($this->data['User']['password']);
		}
		return true;
	}	

}
?>

users_controller.php

// ADMIN_ADD
	function admin_add() {
		if (!empty($this->data)) {
			$this->User->create();
			if ($this->User->save($this->data)) {
				$this->Session->setFlash(__('The user has been saved', true));
				$this->redirect(array('action' => 'index'));
			} else {
				$this->Session->setFlash(__('The user could not be saved. Please, try again.', true));
			}
		}
		
		$groups = $this->User->Group->find('list', array(
			'conditions' => array('and' => array(
				'Group.id !=' => '10',
				'Group.id !=' => '21'
				)
			), 'order' => array('Group.name'=>'ASC')
		));

		$gerentes = $this->User->Gerente->find('list', array(
			'contain' => array(
				'Grupo' => array(
					'conditions' => array(
						'Grupo.id' => 4
					)
				)
			),
			'conditions' => array(
				'Gerente.active' => true
			),
			'order' => array(
				'Gerente.name' => 'ASC'
			)
		));
		$this->set(compact('groups', 'gerentes'));
	}