(4)There shall be a Council of Ministers consisting of not more than ten per cent, of the total number of members in the Legislative Assembly, with the Chief Minister at the head to aid and advise the Lieutenant Governor in the exercise of his functions in relation to matters with respect to which the Legislative Assembly has power to make laws, except in so far as he is, by or under any law, required to act in his discretion:Provided that in the case of difference of opinion between the Lieutenant Governor and his Ministers on any matter, the Lieutenant Governor shall refer it to the President for decision and act according to the decision given thereon by the President and pending such decision it shall be competent for the Lieutenant Governor in any case where the mailer, in his opinion, is so urgent that it is necessary for him to take immediate action, to take such action or to given such direction in the matter as he deems necessary.