Myplayer mode roster editing

Does anyone know how to unlock roster editing in myplayer mode? I want to be able to fix shoes and update accessories while using myplayer instead of having to edit everything before starting the mode.

Hmm i think there is a trade modifier tool a trainer it in nlsc. It can edit rosters and if you want to edit other players ratings just change you're player in the tool and Use you're skill points to increase their ratings and switch it back to you're player.