Would be nice to have an "Modify" button on self-created(!) Tickets. Tickets created frm other users can not be modify.
There is allready an "DELETE" option in the /admincp/groups.php starts on line 144 in the script...
On second thought, just click the Pencil that's sitting above the ticket description...
Admins and people who created the ticket can double click on the ticket body/description to display an edit box.
It's all done by Ajax, there's currently no way to edit tickets on a browser that doesn't support Ajax.