cake schema run create users -path plugins/account_manager/config/sql

Exsample AppController

class AppController extends Controller {
	public $components = array(
		'Security',
		'Auth',
		'AccountManager.AuthSetting',
	);
}

Exsample AppModel

class AppModel extends Model {
	public $actsAs = array(
		'AccountManager.ForeignKey',
	);
}

If you use SMTP for sending mail.
Copy plugins/account_manager/config/smtp.php.default app/config/smtp.php
Edit app/config/smtp.php.

If you use admin routing. Exsample index users
Copy plugins/account_manager/config/basic.php.default app/config/basic.php
Edit app/config/basic.php.
You can use BasicAuth.