Two of the four deputy governors are traditionally from RBI ranks and are selected from the bank's executive directors. One is nominated from among the chairpersons of public sector banks and the other is an economist. An Indian Administrative Service officer can also be appointed as deputy governor of RBI and later as the governor of RBI as with the case of Y. Venugopal Reddy and Duvvuri Subbarao. Other persons forming part of the central board of directors of the RBI are Nachiket Mor, Y. C. Deveshwar, Prof Damodar Acharya, Ajay Tyagi and Anjuly Duggal.