§1. If it concerns conferring an ecclesiastical office in a diocese upon some religious, the diocesan bishop appoints the religious, with the competent superior making the presentation, or at least assenting to the appointment.
§2. A religious can be removed from the of-Fie entrusted to him or her at the discretion either of the entrusting authority after having informed the religious superior or of the superior after having informed the one entrusting; neither requires the consent of the other.
Source: Code of Canon Law (Vatican.va)