Without limiting requirements that may be prescribed for the purposes of paragraph 23(c) or 24(c), requirements may relate to any or all of the following:
(a) the nature of arrangements;
(b) the parties able to enter arrangements, including accreditation or other requirements for the purposes of satisfying the Secretary that parties are fit and proper persons to be party to such arrangements;
(c) conditions on arrangements, including the condition that arrangements be registered with the Secretary.