Regulations made under any provision of this Part may provide for the determination of questions of fact or of law which may arise in giving effect to the regulations and for regulating (otherwise than in relation to any court proceedings) any matters relating to the practice and procedure to be followed in connection with the determination of such questions, including provision—
as to the mode of proof of any matter;
as to parties and their representation;
for the right to appear before and be heard by the Secretary of State, the Director and other authorities; and
as to awarding costs or expenses of proceedings for the determination of such questions, including the amount of the costs or expenses and the enforcement of the awards.
Regulations made under any provision of this Part which prescribe a period within which things are to be done may provide for extending the period so prescribed.
Regulations made under any provision of this Part may—
provide for anything falling to be determined under the regulations to be determined by such persons, in accordance with such procedure and by reference to such matters and to the opinion of such persons as may be prescribed by the regulations;
make different provision for different cases, including different provision in relation to different persons, circumstances or localities; and
make such supplemental, consequential and transitional provision as the Secretary of State or, as the case may be, the Director considers appropriate.