<?php
   ...

   $swift->assign('options', array(
     0 => 'NULA',
     1 => 'JEDNA',
     2 => 'DVA',
     3 => 'TRI',
     4 => 'STYRI',
     5 => 'PAT',
     6 => 'SEST',
     7 => 'SEDEM',
     8 => 'OSEM',
     9 => 'DEVAT',
   ));

   ...
?>

<div>{s:html.checkboxes(name="myboxes[1]" values=$options cols=3 selected="{0:1, 1:5, 2:9}")}</div>

<div>
  <table class="swift_checkboxes_table">
    <tbody>
      <tr class="swift_checkboxes_row_1">
        <td class="swift_checkboxes_col_0">
          <input type="checkbox" name="myboxes[1]" value="0" id="id_myboxes_1_0" /> 
          <label for="id_myboxes_1_0">NULA
          </label></td>
        <td class="swift_checkboxes_col_1">
          <input type="checkbox" name="myboxes[1]" value="1" checked="checked" id="id_myboxes_1_1" /> 
          <label for="id_myboxes_1_1">JEDNA
          </label></td>
        <td class="swift_checkboxes_col_2">
          <input type="checkbox" name="myboxes[1]" value="2" id="id_myboxes_1_2" /> 
          <label for="id_myboxes_1_2">DVA
          </label></td>
      </tr>
      <tr class="swift_checkboxes_row_2">
        <td class="swift_checkboxes_col_3">
          <input type="checkbox" name="myboxes[1]" value="3" id="id_myboxes_1_3" /> 
          <label for="id_myboxes_1_3">TRI
          </label></td>
        <td class="swift_checkboxes_col_4">
          <input type="checkbox" name="myboxes[1]" value="4" id="id_myboxes_1_4" /> 
          <label for="id_myboxes_1_4">STYRI
          </label></td>
        <td class="swift_checkboxes_col_5">
          <input type="checkbox" name="myboxes[1]" value="5" checked="checked" id="id_myboxes_1_5" /> 
          <label for="id_myboxes_1_5">PAT
          </label></td>
      </tr>
      <tr class="swift_checkboxes_row_3">
        <td class="swift_checkboxes_col_6">
          <input type="checkbox" name="myboxes[1]" value="6" id="id_myboxes_1_6" /> 
          <label for="id_myboxes_1_6">SEST
          </label></td>
        <td class="swift_checkboxes_col_7">
          <input type="checkbox" name="myboxes[1]" value="7" id="id_myboxes_1_7" /> 
          <label for="id_myboxes_1_7">SEDEM
          </label></td>
        <td class="swift_checkboxes_col_8">
          <input type="checkbox" name="myboxes[1]" value="8" id="id_myboxes_1_8" /> 
          <label for="id_myboxes_1_8">OSEM
          </label></td>
      </tr>
      <tr class="swift_checkboxes_row_4">
        <td class="swift_checkboxes_col_9">
          <input type="checkbox" name="myboxes[1]" value="9" checked="checked" id="id_myboxes_1_9" /> 
          <label for="id_myboxes_1_9">DEVAT
          </label></td>
        <td class="swift_checkboxes_col_empty"></td>
        <td class="swift_checkboxes_col_empty"></td>
      </tr>
    </tbody>
  </table>
</div>