The templates supplied with DBManSQL are only examples and it's up to you to modify them. You can decide what fields to display but if you use the standard template it will always generate ALL fields to be displayed. A hidden field is alway hidden on the form but it depends on your code as to if it's shown on any result pages. You need to replace the red code in the following default add_success.html with the fields you want to display -
<%include header.html%>
<%ifnot m%>
<p>
<center>
<table border="1" cellpadding="0" cellspacing="0">
<tr>
<td height="125">
<table bgcolor="#ffffff" border="0" cellpadding="3" cellspacing="3" width="500" valign="top">
<%Dbsql::HTML::generate_add_success%>
</table>
</td>
</tr>
</table>
<p>
</center>
<%endif%>
<p>
<%include footer.html%>
The code you add should look something like -
Title1: <%field_name%>
Title2: <%field_name%>
If you don't want the hidden field displayed, don't include it here.
Hope this helps.
Simon.