In this part—
(a)the applicant for the application for which the decision was made; or
(b)for a decision substituting a person as a relevant person for the application—the person who is the substitute.
application means an application made under chapter 6 for the resolution of a dispute.
decision means any of the following actions taken by the commissioner on an application—
(a)the rejection of the application;
(b)the withholding of permission to change the application;
(c)the imposition of conditions on permission to change the application;
(d)the substitution of a person as a relevant person for the application.