Indiana Code Title 16. Health § 16-36-7-33

Sec. 33. (a) Except when the terms of the advance directive explicitly prohibit or restrict delegation, a health care representative who is designated by name in an advance directive may make a written delegation of some or all of the health care representative's authority to one (1) or more other competent adults or other persons, on a temporary or open ended basis as stated in the written delegation document.

(b) A written delegation document under this section must be signed in compliance with section 28 of this chapter and witnessed or acknowledged in compliance with section 28(c), 28(d), or 28(e) of this chapter.

(c) A written delegation of authority that does not state an expiration date continues until it is revoked, in a manner complying with section 32 of this chapter, by the competent declarant or by the health care representative who signed the written delegation.

(d) If the advance directive explicitly states a date or event that triggers termination of the advance directive or termination of the authority of a health care representative who makes a written delegation under this section, the delegated authority terminates upon the triggering event or expiration date.