The commissioner shall adopt rules under N.H. Rev. Stat. Chapter 541-A relative to:
I. Further definition of services to be provided under this chapter.
II. Requirements for eligibility for services.
III. Manner of providing services under N.H. Rev. Stat. § 126-G:3.
IV. Size of regional family support councils and assignment of family support coordinators pursuant to N.H. Rev. Stat. § 126-G:4.