Barbados

There shall be a Parliament of Barbados which shall consist of the President, a Senate and a House of Assembly. (Sec. 35)

(1) The Senate shall consist of twenty-one persons who, being qualified for appointment as Senators in accordance with the provisions of this Constitution, have been so appointed in accordance with the provisions of this section.
(2) Twelve Senators shall be appointed by the President, acting in accordance with the advice of the Prime Minister, by instrument under the Public Seal.
(3) Two Senators shall be appointed by the President, acting in accordance with the advice of the Leader of the Opposition, by instrument under the Public Seal.
(4) Seven Senators shall be appointed by the President, acting in his discretion, by instrument under the Public Seal, to represent religious, economic or social interests or such other interests as the President considers ought to be represented:
Provided that before appointing any person under this subsection the President shall consult such persons as, in his discretion, he considers can speak for those interests and ought to be consulted. (Sec. 36) 

Subject to the provisions of section 38, any person who at the date of his appointment is a citizen of Barbados of the age of twenty-one years or upwards shall be qualified to be appointed as a Senator. (Sec. 37)

(1) The House of Assembly shall consist of thirty members or such greater number of members as Parliament may prescribe.
(2) The members of the House (who shall be known as “Members of Parliament”) shall be persons who, being qualified for election as such in accordance with the provisions of this Constitution, have been so elected in the manner provided by this Constitution. (Sec. 41)

Subject to the provisions of section 44, any person who
(a) is a citizen of Barbados of the age of twenty-one years or upwards; and
(b) has such connection with Barbados by residence therein as may be prescribed by Parliament,  shall be qualified to be elected as a member of the House of Assembly. (Sec. 43)

(1) Subject to the provisions of this Constitution, Parliament may make laws for the peace, order and good government of Barbados.
… (Sec. 48)