82.8. The chairman and the vice-chairman of a committee shall remain in office until the first of the following dates:(1) that of the end of his term of office as a member of the committee;
(2) that on which he is appointed to another office that entails membership of the executive committee.
In addition, the vice-chairman of a committee ceases to hold office on the date on which the chairman who was appointed at the same time as, or was in office when, he was appointed, ceases to hold the office of chairman.
The Council shall make the appointment provided for in section 82.3 within thirty days after the date mentioned in the first or second paragraph, as the case may be.
Notwithstanding the first and second paragraphs, the chairman or the vice-chairman remains in office until his successor is appointed.