You can only change which ships occupy which positions in a formation... not the formation itself.
The unfortunate reality of modding Armada games ;)
well there must be a way, and I am gonna find it.
Good luck... I'll see you back here in a month or so, when you've totally given up ;)
(Yes, it's really that way. We've tested it a billion times, with tons of combinations, ever since A2 came out... no solution will magically appear now ;) )