Indiana Code Title 36. Local Government § 36-10-11-4

Sec. 4. (a) Within fifty (50) days after the adoption of the ordinance, the city executive shall appoint three (3) trustees and the city legislative body shall appoint two (2) trustees of the authority.  All of the trustees must be at least twenty-one (21) years of age and residents of the city for at least five (5) years before appointment.

(b) Initial terms of the trustees are as follows:

At the expiration of a term, the appointing authority shall appoint a successor for a four (4) year term.  Each trustee serves until the trustee's successor is appointed and qualified.

(c) If a trustee dies, resigns, ceases to be a resident of the city, fails to qualify for office within ten (10) days after the trustee receives notice of the trustee's appointment, or is removed for cause, the appointing authority shall appoint another person as trustee for the remainder of that term.

(d) Each trustee, before entering upon the trustee's duties, shall take and subscribe an oath of office to be endorsed upon the trustee's certificate of appointment.  The certificate shall be filed with the city clerk.