The adaptive reuse of Rochester’s former Holy Rosary campus as affordable housing and as space for community organizations will be the focus of a Rensselaerville, N.Y., conference March 6 and 7 sponsored by The New York Landmarks Conservancy and the Carey Center for Global Good. The Holy Rosary campus is undergoing renovations by Providence Housing Development Corp., an affiliate of the diocesan Catholic Charities, to convert it into affordable housing.