It shall not be altered to their disadvantage.

Filling up of casual vacancies Filling up of casual vacancies.- Save as otherwise provided in this Act, when any vacancy occurs in the office of a non-official member of any authority or other body of the University before the expiry of the term of office of such member, the vacancy shall be filled up, as soon conveniently as may be, by nomination, appointment or, as the case may be, co-option of a member who shall hold office so long only as the member in whose place he has been nominated, appointed or co-opted, would have held it, if the vacancy had not occurred.