$form->addDynamic('terminy', function ($container) {
    $container->addChecbox('isOk', 'Vyhovuje');
});


# šablona

<tr n:foreach="$terminy as $id => $termin">
    <td>
        Termín {$termin->date} mi
        {$form['terminy'][$id]->label}
        {$form['terminy'][$id]->control}
    </td>
</tr>