The Dicastery reference article from the English Wikipedia on 24-Apr-2004
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Dicastery

Sponsorship the way you would do it
Dicasteries are the central offices of the Roman Curia in which the stewardship of the Roman Catholic Church is entrusted. Examples of dicasteries are the Secretariat of State, Congregations, Tribunals, Councils and Offices, like the Apostolic Camera, the Administration of the Patrimony of the Apostolic See, and the Prefecture for the Economic Affairs of the Holy See.

The dicastery is presided over by either a prefect or a president.

See also

Section of the Apostolic Constitution "Pastor Bonus" dealing with dicasteries