77.— (1) Subject to subsection (2), Chapters 2 and 3 apply only to a committee whilst it is conducting other committee business and on which a power to send for persons, papers and records has been conferred by the House and shall only so apply subject to the extent of the power so conferred and any conditions imposed by the House on its exercise.

(2) Subject to subsection (3), Chapters 2 and 3 shall not apply to a committee in respect of any particular matter the subject of the other committee business being conducted by the committee unless the committee has given a direction in respect of the particular matter.

(3) A committee shall not give a direction unless it has the consent in writing of the appropriate committee to do so and any such consent may be given generally or in any particular case.