Canon 1018

Can. 1018 §1. The following can give dimissorial letters for secular clergy:
1º the proper bishop mentioned in can. 1016;
2º an apostolic administrator and, with the consent of the college of consultors, a diocesan administrator; with the consent of the council mentioned in can. 495 §2, an apostolic pro-vicar and an apostolic pro-prefect.

Can. 1018 §2. A diocesan administrator, apostolic pro-vicar, and apostolic pro-prefect are not to grant dimissorial letters to those who have been denied admission to orders by the diocesan bishop, the apostolic vicar, or the apostolic prefect.