Follow these steps to copy and paste the html into the Management System page via code view and then insert a document into the Management System diagram from the Document Vault:
<h4>Table Template - 1</h4>
<table border="1" cellpadding="1" cellspacing="1" style="width: 120px;height:60px;">
<tbody>
<tr>
<th style="box-shadow: 2px 2px 2px #333333; ">
</th>
</tr>
<tr>
<td>
</td>
</tr>
</tbody>
</table>