bbui-forms-fieldset-column
You can create multiple columns on a data form with div elements with class="bbui-forms-fieldset-column".
<div id="#MAP#BBUITestsAddDataForm">
<h2 id="#MAP#FORMHEADER_value"></h2>
<div class="bbui-forms-fieldset-column">
<table>
<tr id="#MAP#FIELD1_container">
<td>
<label id="#MAP#FIELD1_caption" for="#MAP#FIELD1_value"></label>
</td>
<td>
<input id="#MAP#FIELD1_value" type="text" />
</td>
</tr>
<tr id="#MAP#FIELD2_container">
<td>
<label id="#MAP#FIELD2_caption" for="#MAP#FIELD2_value"></label>
</td>
<td>
<input id="#MAP#FIELD2_value" type="text" />
</td>
</tr>
</table>
</div>
<div class="bbui-forms-fieldset-column">
<table>
<tr id="#MAP#FIELD3_container">
<td>
<label id="#MAP#FIELD3_caption" for="#MAP#FIELD3_value"></label>
</td>
<td>
<input id="#MAP#FIELD3_value" type="text" />
</td>
</tr>
</table>
</div>
</div>