; (ii) by the fiduciary’s failure to comply with subsection (b) in the administration of the fiduciary’s specific responsibilities which give rise to the fiduciary status, the fiduciary has enabled such other fiduciary to commit such a breach; or (iii) the fiduciary has knowledge of a breach by such other fiduciary, unless the fiduciary makes reasonable efforts under the circumstances to remedy the breach. (4) Allocation of duties The Secretary of Labor shall prescribe, in regulations, procedures for allocating fiduciary responsibilities among fiduciaries, including asset managers. Any fiduciary who, pursuant to such procedures, allocates to any person any fiduciary responsibility shall not be liable for an act or omission of such person unless such fiduciary violated subsection (b) with respect to the allocation, with respect to the implementation of the procedures prescribed by the Secretary of Labor. (5) Other civil actions (A) In general No civil action may be maintained against any fiduciary with respect to the responsibilities, liabilities, and penalties authorized or provided for in this section except in accordance with subparagraphs (B) and (C). (B) Actions permitted A civil action may be brought in the district courts of the United States— (i) by the Secretary of Labor against any fiduciary other than a member of the Board or the Executive Director of the Board— (I) to determine and enforce a liability under paragraph (1); (II) to collect any civil penalty under paragraph (2); (III) to enjoin any act or practice which violates any provision of subsection (b) or (c); (IV) to obtain any appropriate equitable relief to redress a violation of any such provision; or (V) to enjoin any act or practice which violates subsection (g)(2) or (h) of section 201; (ii) by any participant, beneficiary, or fiduciary— (I) to enjoin any act or practice which violates any provision of subsection (b) or (c); (II) to obtain any other appropriate equitable relief to redress a violation of any such provision