Administrator appointment to oversee demutualised exchange transition and exercise committee powers during supersession. SEBI appointed an Administrator to manage the Calcutta Stock Exchange during supersession after demutualisation; the Administrator replaces the prior incumbent, is vested with all powers and duties of the Committee for the period of supersession, may take assistance as necessary, and will oversee formation of a Governing Board to effect the exchange's governance transition under SEBI's regulatory authority.