<P> The prime minister is responsible for aiding and advising the president in distribution of work of the Government to various ministries and offices and in terms of the Government of India (Allocation of Business) Rules, 1961 . The co-ordinating work is generally allocated to the Cabinet Secretariat . While the work of the Government is generally divided into various Ministries, the prime minister may retain certain portfolios if they are not allocated to any member of the cabinet . </P> <P> The prime minister, in consultation with the Cabinet, schedules and attends the sessions of the Houses of Parliament and is required to answer the question from the Members of Parliament to them as the in - charge of the portfolios in the capacity as Prime Minister of India . </P> <P> Some specific ministries / department are not allocated to anyone in the cabinet but the prime minister themself . The Prime Minister is usually always in - charge / head of: </P> <Ul> <Li> Ministry of Personnel, Public Grievances and Pensions </Li> <Li> Cabinet Secretariat </Li> <Li> Appointments Committee of the Cabinet </Li> <Li> NITI Aayog </Li> <Li> Department of Atomic Energy </Li> <Li> Department of Space </Li> <Li> Nuclear Command Authority </Li> </Ul>

Who appoints the prime minister of the country