Are there any restrictions on who can be appointed to perform the duties of the office of Chairman when both the Chairman and Deputy Chairman are absent?
From the context provided, there are no restrictions on who can be appointed to perform the duties of the office of Chairman when both the Chairman and Deputy Chairman are absent. The Governor may appoint any member of the Council for this purpose, or during the absence of the Chairman from any sitting of the Council, a person as determined by the rules of procedure of the Council or as determined by the Council itself can act as Chairman.