Hello,
Yes, this is actually easily achievable. All you have to do is to create a new addon and in there place the following:
$groups = array('first_note_type'.$arg['id'], 'second_note_type'.$arg['id'], 'third_note_type'.$arg['id']);
$a = $this->init_module('Utils/Attachment',array($groups));
$this->display_module($a);
And should give you desired result. One thing of note is - on this addon you won't get the "Add note" button - you'll still have to go back to individual addons.
All that works assuming you're running latest version of epesi.
Kind regards,
Arek