Complex sentence: At the Faculty of Arts, he was on the Faculty Curriculum Review Committee, and the Appointments and Promotions Committee and has represented the faculty in the Appointments, Promotions and Disciplinary Committee for Junior Staff and on the Board of Arts.
Split into simpler sentences: At the Faculty of Arts, he was on the Faculty Curriculum Review Committee, and the Appointments and Promotions Committee. He had represented the faculty in the Appointments and Promotions Committee and on the Board of Arts.