Indiana Code Title 36. Local Government § 36-10-4-3

Sec. 3. (a) A department of public parks is established as an executive department of the city.

(b) The department is under the control of a board of park commissioners.  The board consists of four (4) commissioners appointed by the city executive.  Each commissioner must be a freeholder residing in the city, and no more than two (2) commissioners may have the same political affiliation.

(c) A second class city may pay each commissioner an annual salary in an amount fixed by the fiscal body.  The commissioners shall be paid their actual expenses upon approval by the city executive.

(d) Before beginning the commissioner's duties, each commissioner shall take and subscribe the usual oath of office.  The oath shall be indorsed upon the certificate of appointment and filed with the city clerk.  If a commissioner has not filed the commissioner's oath:

the commissioner is considered to have refused to serve and the office becomes vacant.