I have been working on a module for prestashop for a few weeks now, my only problem is that when i add something to the hook displayAdminOrder it shows up in the top of the page, just outside the row for the default Back-office template.
Is it somehow possible to append my modules information to one of the existing panels, like inside the customer information or as an extra tab in the order information panel where the orders "status history" and "documents" are, without i have to modify the default theme ?
The front-office part feels so easy to add extra information on, while the back-office seems to be quite hard.