31 (c) exercising any other functions that may be conferred or imposed on the Board by or under an Act of Parliament. 3.8 Powers of Parliament in regard to citizenship An Act of Parliament may make provision, consistent with this Chapter, for— (a) procedures by which Zimbabwean citizenship by registration may be acquired; (b) the voluntary renunciation of Zimbabwean citizenship; (c) procedures for the revocation of Zimbabwean citizenship by registration; (d) the restoration of Zimbabwean citizenship; (e) the prohibition or permitting of dual citizenship in respect of citizens by descent or registration; and (f) generally giving effect to this Chapter. 3.9 Continuation and restoration of previous citizenship (1) Every person who, immediately before the effective date, was a Zimbabwean citizen continues to be a citizen of Zimbabwe after that date. (2) Every person who was born in Zimbabwe before the effective date is a citizen of Zimbabwe by birth if— (a) one or both of his or her parents was a citizen of a country which became a member of the Southern African Development Community established by the treaty signed at Windhoek in the Republic of Namibia on the 17th August, 1992; and (b) he or she was ordinarily resident in Zimbabwe on the effective date.