N.H. Rev. Stat. Ann. § 354-A:4

The chair shall serve as the chief executive officer of the commission. The chair shall be a licensed attorney admitted or eligible to practice law in this state. The chair shall promote the efficient transaction of its business and the orderly handling of complaints and other matters before the commission. The chair shall designate commissioners to investigate and commissioners to hold hearings pursuant to RSA 354-A:21 and shall fix the times and places of public hearings. In the event of the chair's absence or inability to act, the vice-chair, or if no vice-chair has been designated, a commissioner designated by the chair shall act in the chair's stead. Otherwise a commissioner shall be designated by the governor to act as chair.