53 Pa. Stat. § 105
The charter commission shall organize and function in accordance with the provisions of the Optional Third Class City Charter Law and, in so far as the same are applicable, shall exercise the same powers and perform the same duties as are conferred or imposed upon charter commissions elected under the provisions of the Optional Third Class City Charter Law.
Members of the charter commission shall serve without compensation but shall be reimbursed by the city for their necessary expenses incurred in the performance of their duties. The city council shall appropriate reasonable sums of money necessary for such purpose and for the work of the charter commission as provided in the Optional Third Class City Charter Law.
The charter commission shall report its recommendations at the time and in the manner provided in the Optional Third Class City Charter Law. In its report, the charter commission shall recommend retention of the existing classification or adoption of the commission form of government or adoption of one of the optional forms of city government provided in the Optional Third Class City Charter Law.
53 P.S. § 105