Notwithstanding applicable State law, candidates for appointment to County boards and commissions, subject to Section 322 of the County Charter, shall reside in Prince George's County at the time of their confirmation and shall maintain County residency throughout their length of service. Board or commission members that do not maintain their residency shall immediately notify the County Executive and the County Council and their service automatically expires from the date that the member moved from the county. Candidates for appointment to the Prince George's County Public Employee Relations Board are required to possess specialized skills, expertise and knowledge and as a result of that necessity, the Prince George's County Public Employee Relations Board shall be exempted from the resident requirement of subsection (a) above.