Except as provided in § 3-507 of this subtitle, a fund plan shall state the name of the fund and include detailed provisions, not inconsistent with this subtitle, as to: The intervals at which the trust company will determine the value of the assets in the fund; The intervals at which the trust company will have an audit made of the fund; The manner in which the fund is to be operated; The investment powers of the trust company with respect to the fund; The terms and conditions that govern entry in and withdrawal from the fund; The auditing and settling of accounts of the trust company with respect to the fund; The basis and method to be used for valuing fund assets; The circumstances and manner in which the fund may be terminated; and Any other matters that are necessary to define clearly the rights and duties of the trust company and fund participants.