webapp-multi-skeleton/protected/business/business1/views/_includes/menu.php

<li>
    <a href="<?php echo $this->webApp()->getSite(); ?>b/ejemplo"><i class="fa fa-paper-plane fa-fw"></i> <span>Página de Negocio</span></a>
</li>

<?php

if ($this->webApp()->getCuenta())
    $this->renderCuentaInclude('menu');

?>