MeatyHobbertson

I'm working on making a FE4 hack with custom maps, and I cannot seem to find where/how to change the initial positions of Sigurd, Alec, Noaise, and the starting position of Arden (although he eventually shuffles his way to where I put him in the fe4map unit placer). Which tool would I go to change those and how? And I suppose, by extension, how would I do the same for the other spawns on later turns (Lex/Azelle, Quan/Ethlyn/Fin)