Video, how to install & how it's Working..
VIDEO CLICK here..

This mod show all custom filed,
on all possible layout

admin area:
- Order vivew (show all fields, no mather if empty, for controll)
- Invoice,
- Shipping

Front End:
- customer order history
- order mail (not recorded on video)

Compatibility: Opencart 3.x, original theme, Journal theme...
and more themes wich respect the core.

Installation: Plug & play ,
like as you see on video :)