Section 5 of the Principal Act is amended by inserting after subsection (2) the following subsection:(3) Subject to this Act or any other Act, a Commission (a) may (i) conduct its inquiry in any manner that it considers appropriate; and(ii) obtain information in any manner that it considers appropriate; and(iii) determine its own procedure in conducting its inquiry; and(b) must, in conducting its inquiry (i) observe the rules of procedural fairness; and(ii) comply with this Act; and(iii) act within the scope of the order under section 4(1) that established the Commission.