§1. The local ordinary alone is competent to confer upon any presbyters whatsoever the faculty to hear the confessions of any of the faithful. Presbyters who are members of religious institutes, however, are not to use the faculty without at least the presumed permission of their superior.
§2. The superior of a religious institute or society of apostolic life mentioned in can. 968, §2 is competent to confer upon any presbyters whatsoever the faculty to hear the confessions of their subjects and of others living day and night in the house.
Source: Code of Canon Law (Vatican.va)