5. (1) The President shall hold office for a term not exceeding four years and not extending beyond the expiry of his term as member, and shall be eligible for re-election. (2) The President shall be deemed to have vacated office on the day the Council holds its meeting after its re-constitution. (3) The President may resign his office by notice in writing addressed to the Government and shall be deemed to have vacated office on such resignation being accepted by the Government. (4) A member, other than an ex-officio member, shall hold office for a term of four years from the date of his nomination or, as the case may be, election, or until his successor has been nominated or elected. (5) A member shall be eligible for re-election or, as the case may be, re-nomination. (6) A member, other than an ex-officio member shall vacate office if he-(a) resigns his office by notice in writing addressed to the President and the resignation is accepted by the President; (b) fails to attend three consecutive meetings of the Council without leave of absence granted by the Council;(c) remains out of Bangladesh for a continuous period exceeding one and a half year; (d) ceases to represent the particular interest for which he was elected or, as the case may be, nominated. (7) Any casual vacancy in the office of member, including the President caused by death, resignation, removal or otherwise shall be filled by election or, as the case may be, nomination and the person so elected or nominated shall hold office for the unexpired period of the term of office of his predecessor.