5.—(1) There shall be 14 or 21 voting members appointed to the Board of Governors of a controlled integrated school, other than a controlled integrated school to which sub-paragraph (3) applies, and, subject to paragraph 6, of those members—N.I.
(a)two-sevenths shall be elected by parents of [registered pupils at] the school from amongst the parents of such pupils;
(b)two-sevenths shall be chosen by [the Authority] ...;
(c)one-seventh shall be nominated by the transferors and superseded managers of controlled schools (other than controlled integrated schools) in the [locality served by the school] ;
(d)one-seventh shall be nominated by the nominating trustees of Catholic maintained schools in the [Roman Catholic diocese in which the school is situated (or in so much of that diocese as lies within Northern Ireland)] ;
(e)one-seventh shall be elected by assistant teachers at the school from amongst such assistant teachers.
(2) Sub-paragraph (3) applies to—
(a)a controlled integrated grammar school; and
(b)a controlled integrated school which immediately before the date on which it became a controlled integrated school was a voluntary school (other than a Catholic maintained school).
(3) There shall be 14 or 21 voting members appointed to the Board of Governors of a controlled integrated school to which this sub-paragraph applies and, subject to paragraph 6, of those members—
(a)two-sevenths shall be elected by parents of [registered pupils at] the school from amongst the parents of such pupils;
(b)two-sevenths shall be chosen by [the Authority] ...;
(c)two-sevenths shall be nominated by the Head of the Department;
(d)one-seventh shall be elected by assistant teachers at the school from amongst such assistant teachers.
(4) It shall be the duty of [the Authority] in appointing persons to a Board of Governors under sub-paragraph (1)(b) or (3)(b) to choose for appointment persons appearing to [the Authority] to be committed to the continuing viability of the school as a controlled integrated school and it shall be the duty of the Head of the Department in nominating persons for appointment to a Board of Governors under sub-paragraph (3)(c) to nominate persons appearing to the Head of the Department to be so committed.