59.- (1) The Governor-General, acting in accordance with the advice of the Prime Minister, may appoint Parliamentary Secretaries from among the members of the National Assembly to assist Ministers in the performance of their duties:
Provided that, if occasion arises for making an appointment while Parliament is dissolved, a person who was a Representative or a Senator immediately before the dissolution may be appointed as a Parliamentary Secretary.
(2) The office of a Parliamentary Secretary shall become vacant-
a) if the Governor-General, acting in accordance with the advice of the Prime Minister, so directs;
b) if the Prime Minister resigns from office with three days after a resolution of no confidence in the Government has been passed by the National Assembly or is removed from office under section 52(6);
c) upon the appointment of any person to the office of Prime Minister;
d) if the holder of the office ceases to be a member of the Assembly otherwise than by reason of a dissolution of Parliament;
e) if, when the Assembly first meets after the dissolution of Parliament, he is not then a Representative or a Senator; or
f) if, by virtue of section 31 (4), he is required to cease to perform his functions as a member of the Assembly.