; or (B) order a rehearing upon the order, decision, report, or action. (6) Application required for judicial review The filing of an application for review under paragraph (3)(A) shall be a condition precedent to judicial review of any order, decision, report, or action made or taken pursuant to a delegation under paragraph (1). (7) Qualifications and compensation of delegates; assignment of cases; separation of review and investigative or prosecuting functions (A) Qualifications of delegates The employees to whom the Commission may delegate review functions in any case of adjudication (as defined in the Administrative Procedure Act)— (i) shall be qualified, by reason of their training, experience, and competence, to perform such review functions; and (ii) shall perform no duties inconsistent with such review functions. (B) Compensation An employee described in subparagraph (A) shall be in a grade classification or salary level commensurate with the important duties of the employee, and in no event less than the grade classification or salary level of the employee or employees whose actions are to be reviewed. (C) Separation In the performance of review functions described in subparagraph (A), employees described in that subparagraph— (i) shall be assigned to cases in rotation so far as practicable; and (ii) shall not be responsible to or subject to the supervision or direction of any officer, employee, or agent engaged in the performance of investigative or prosecuting functions for any agency. (8) Secretary