Board Thread:Questions and Answers/@comment-86.253.0.105-20161201204403

I got my first Plat Unit. I was looking for the answer on the forum but as it was redone, all old posts disapeard. So : I want to awaken the unique ability of my unit, but if I understand what people say, it only activates at the start of the quest? But if active, its effect can still lasts for all of the waves, right? So what is the best way to awaken it? Rolling 1AP on 3 stages missions? 