In this Part—
"applicant" means the person who makes an application to the Tribunal under this Part;
"party" to proceedings means—
(a) the applicant; and
(b) the relevant compensating authority; and
(c) if the matter is about a work injury and the worker who suffered or is alleged to have suffered the work injury is not the applicant—the worker; and
(d) if the matter is about a work injury and the employer from whose employment the injury arose or is alleged to have arisen is not the applicant—the employer; and
(e) a person who has a direct interest in the matter and has notified the Registrar of the interest;
"relevant compensating authority" in relation to a particular decision means—
(a) if the decision was made by the Corporation or a body corporate exercising powers delegated by the Corporation—the Corporation or the relevant delegate; or
(b) if the decision was made by a self-insured employer—the self-insured employer;
"rules" means the rules of the Tribunal.