Ind. Code § 5-1.2-4-14
The bonds may be secured by a trust agreement or indenture by and between the authority and a corporate trustee, which may be a bank having the power of a trust company or any trust company within or without the state. The trust agreement or indenture may contain provisions for protecting and enforcing the rights and remedies of the bondholders as may be reasonable and proper and not in violation of law, including covenants setting forth the duties of the authority in relation to the exercise of the authority's powers and the custody, safekeeping, and application of all money related to the particular bond financing for which the trust agreement or indenture exists. The authority may provide by the trust agreement or indenture for the payment of the proceeds of the bonds and the revenue to the trustee under the trust agreement or indenture or other depository, and for the method of disbursement of the proceeds, with safeguards and restrictions as the authority may determine. All expenses incurred in carrying out the trust agreement or indenture may be treated as a part of the operating expenses of the authority. If the bonds are secured by a trust agreement or indenture, the bondholders have no authority to appoint a separate trustee to represent them.
IC 5-1.2-4-14