Indiana Code Title 33. Courts and Court Officers § 33-41-3-5

(1) a party to the proceeding;

(2) a relative, an employee, or an attorney of one (1) of the parties to the proceeding;

(3) someone with a financial interest in the proceeding or its outcome;  or

(4) a relative, an employee, or an attorney of a person with a financial interest in the proceeding or its outcome.