See #1249–1253[+] of the <i>Code of Canon Law</i> for the Latin Church (a.k.a. Western Church).<p>[+] <a href="http:&#x2F;&#x2F;www.vatican.va&#x2F;archive&#x2F;ENG1104&#x2F;_P4O.HTM" rel="nofollow">http:&#x2F;&#x2F;www.vatican.va&#x2F;archive&#x2F;ENG1104&#x2F;_P4O.HTM</a>