View file PF.Base/module/event/include/plugin/feed.service_process_deletefeed.php

<?php
defined('PHPFOX') or exit('NO DICE!');

if (Phpfox_Request::instance()->get('module') == 'event')
{
	$aEvent = Event_Service_Event::instance()->getForEdit($aFeed['parent_user_id'], true);
	if (isset($aEvent['event_id']) && $aEvent['user_id'] == Phpfox::getUserId())
	{
		define('PHPFOX_FEED_CAN_DELETE', true);
	}
}

?>