Hi,
I am not sure the layout that you are using, but if it is Default layout, you can follow below steps to change from Created Date to Modified Date (of documents)
1. Open file: root -> components -> com_edocman -> view -> common -> documents_default.php
2. Find:
Code:
<div class="dateinformation">
<i class="edicon edicon-calendar"></i> <?php echo JHtml::_('date', $item->created_time, $config->date_format, true); ?>
</div>
and change to
Code:
<div class="dateinformation">
<i class="edicon edicon-calendar"></i> <?php echo JHtml::_('date', $item->modified_time, $config->date_format, true); ?>
</div>
Good luck
Dam