74. Nothing in Part III or V shall render unlawful any act done by—
(a)an employer;
(b)an employment agency;
(c)a vocational organisation; or
(d)a person providing services as mentioned in Article 24(1),
in or in connection with encouraging members of the Roman Catholic, or members of the Protestant, community in Northern Ireland to consider or to apply for a particular employment or particular training or to consider a particular occupation, where the act is done in pursuance of affirmative action.