No, you have to write code to do it, and a standard DW repeat region is just as good as DataAssist to do what it does.
Basically you need to add code by hand, but really it is only a couple of lines... something like:
<?php
$startTitle = "";
?>
<?php
// start repeat region code
?>
<?php
if ($startTitle != $row_galleries['title']) {
$startTitle != $row_galleries['title'];
?>
<br>Title: <?php echo($row_rsname['title']); ?><br>images:
<?php
} else {
?>
<?php echo($row_rsname['pic']); ?>
<?php
}
?>
<?php
// end repeat region code
?>