The Franciscans and Barnabites missionaries in this city, chose him as arbitrator on an issue that divided them, and accepted his decision.

On 31 January 1768 he consecrated Giovanni Maria Percoto as the Titular Bishop of Maxula Prates and the Vicar Apostolic of Ava e Pegù.

By a decree issued on 7 September 1778 he gained 13 jurisdictions, which gave him authority over all Christians in the territory of the French colony excluding Europeans and Creoles who remained subject to the Capuchins.

He consulted with Rome on some Indian customs and caste, and wisely applied the guidelines he received.

In 1785, he chose Nicolas Champenois as coadjutor and consecrated him as the Titular Bishop of Doliche on 5 November 1786.