Welcome to the world of hard coded console programming - everything is simple, lacks flexibility and does NOT work. But tarded 8 year olds can use a palm mash pad .. LOL
Unfortunately it's becoming the norm in the game dev industry. Focus on consoles, F PC players, despite the vast majority of their audience being on PC.
I'd much rather edit my formations manually in party screen than have anything in pre-battle screen...The system that is now seems so unnecessarily complicated... Better to have manual formation editing in party screen, hands down.