We write on the same stories but we have a chapter for each character. So like chapter 1 (Toxic) is Toxic's (my) point of view on the chapter and chapter 1 (Autumn) is Autumn's (Lacy's) point of view on the chapter.
Well Rei and I both have a part in each story- so for example in stones and spies, rei's point of view is writen by rei and in autumns point of view is written by me (Lacy)