6. a. Nothing in this act shall be construed to interfere with the rights of an agent operating under a valid 
advance directive
pursuant to the provisions of the "New Jersey Advance Directives for Health Care Act," P.L.1991, c.201 (C.26:2H-53 et al.), the "New Jersey Advance Directives for Mental Health Care Act," P.L.2005, c.233 (C.26:2H-102 et al.), or the "Physician Orders for Life-Sustaining Treatment Act," P.L.2011, c.145 (C.26:2H-129 et al.).
b. A patient may designate a caregiver in an advance directive.
advance directive pursuant to the provisions of the "New Jersey Advance Directives for Health Care Act," P.L.1991, c.201 (C.26:2H-53 et al.), the "New Jersey Advance Directives for Mental Health Care Act," P.L.2005, c.233 (C.26:2H-102 et al.), or the "Physician Orders for Life-Sustaining Treatment Act," P.L.2011, c.145 (C.26:2H-129 et al.).b. A patient may designate a caregiver in an advance directive.
