I dont think it is possible.
this is because that person is already in full time employee elsewhere outside india and receiving the relevant salary for that.
Now you want to appoint the same person in india as CEO. The term CEO is not defined currently u/CA1956. But i think it would be construed as Manager within the meaning of the current CA 1956. Since CEO requires the devotion of full time of the concerned person and since that person is already in full time employment elsewhere......i believe that it is not possible as such
But their may be applicability of sec.316 or 386 of the current CA1956, which provides the appointment of MD or Manager where that person is already acting as MD or Manager in one company, and which requires the approval of CG, and CG in turn should satisfy that the same person should act as MD or Manager for smooth functioning of both companies.
i request for second opinion on this from the learned members of this forum
regard
sameera