Can't help you with all your question butting adding the organisation to the user directory is easy enough.
Just do this.Open the file users.inc.php located in /include/staff/
Add <th
width="110"><a <?php echo $org_sort; ?>
href="tickets.php?sort=organization&order=<?php echo $negorder;
?><?php echo $qstr; ?>" title="Sort By Organization <?php
echo $negorder; ?>">Organisation</a></th> to the Table
Header Section around line 161.
font-family:"Tahoma",sans-serif;mso-fareast-font-family;mso-fareast-theme-font:
minor-latin;mso-ansi-language-AU;mso-fareast-language-US;mso-bidi-language:
AR-SA">Add
191"><td><?php echo (isset($row)) ?
$row : ' ';?></td> to the section Table
Data Section around line 206.
mso-fareast-font-family;mso-fareast-theme-font-latin;mso-ansi-language:
EN-AU;mso-fareast-language-US;mso-bidi-language-SA">
font-family:"Tahoma",sans-serif;mso-fareast-font-family;mso-fareast-theme-font:
minor-latin;mso-ansi-language-AU;mso-fareast-language-US;mso-bidi-language:
AR-SA">Its rough but works, don't think you can sort on it but works for me. This was done in v1.9.7 but have done it in the past 6 upgrades.