a little help request about pepakura

hello i'm new on this program, done nothing but messing around with ready files, i've managed to find a complete deathstroke armor file but its not unfolded.. as its all parts in one file is there a way to separate parts and make em in different files .
As example iron man files..
or is there anyone interedted that can help me with separating/unfolding that armor ? thanks in advance