; (bb) such tips are shared among all non-supervisory employees participating in such system; (cc) funds held in such system are maintained separately from any other funds; and (dd) the records of such system are available to be examined by each such participating employee. (II) In administering a system to pool tips established under this subparagraph, an employer may suggest reasonable and customary practices. (III) In any dispute among employees relating to the administration of a system to pool tips established under this subparagraph, the employer may mediate and impose a resolution of the dispute on the employees participating in the system only if— (aa) in the case of employees in a restaurant or similar retail food establishment, no agreement resolving the dispute can be reached among— (AA) 50 percent or more of the participating service employees whose primary job duties include direct interaction with customers; and (BB) 50 percent or more of all other participating employees