In the fireteams in the active turn part of rules annex, "By declaring Reset or any Skill with the Movement Tag (except Berserk), both the Fireteam Leader and the other Fireteam members perform that Skill." This seems only team leader can declare berserk and move while all other members are standing still whether they have berserk skill or not. However, there's FAQ in berserk part of wiki says troopers with berserk performs the skill. Does new Annex overwrites the FAQ or FAQ is still effective?
You are a little confused... The rules in the Annex say that some skill are performed by all of the members of the Fireteam. These skills are Reset and any other skill with the Movement Tag. Berserk is an exception to that. Berserk has the Movemente Tag but is performed only by the Team Leader.
FAQ (Jan 28) says, "Can Berserk be used while in a Fireteam? Yes. Only the Troops with Berserk will perform the Skill, the rest will perform an Idle and the Team Leader will be the only one performing the CC Attack." Your answer is that the FAQ is wrong, and only the fireteam leader can perform the berserk?