In 1820 how were the Canons of Durango installed?

I am trying to figure out the date when Agustín Fernández became canon priest of Durango, Mexico. I know these steps were taken: Some time in 1820, the bishop and cathedral chapter chose him as canon, seemingly with no formal oral examination. In January 1821, because of the Patronato Real , the King of Spain appointed him. In October, the Regency of the newly independent Mexican Empire accepted the King of Spain's appointment. Also in October, Fernández was prevented from going to Durango because the Regency was arranging a political appointment for him. In April of 1822, the Regency asked Durango to start paying his salary despite him "not having taken possession" of his prebend. With both the approval of the cathedral chapter, the King and the Regency, were there still more steps he needed to take to become a fully installed member of the cathedral chapter? Even though there is a long tradition of non-residentiary canons, would he have had to show up once, maybe just to make an oath before the bishop?