53.— (1) The Oireachtas Commission may, after consultation with such persons as it considers appropriate, prepare and issue guidelines for the information of witnesses and other persons affected by Part 2 inquiries in respect of the recoupment of the Part 2 inquiry expenses incurred in relation to Part 2 inquiries, and such guidelines may provide for one or more than one of the following:

(a) setting out general principles governing the payment of such expenses;

(b) restricting the types of matters for which payment may be made;

(c) setting maximum amounts in relation to the payment for one or more types of matters;

(d) the documentary evidence required to show that such expenses have been so incurred.

(2) The Oireachtas Commission may allow all reasonable Part 2 inquiry expenses in respect of any matters not included in the guidelines prepared and issued pursuant to this section.