Role of the prime ministerThe Prime Minister leads the functioning and exercise of authority of the Government of India. He or she is invited by the President as leader of the majority party in the Parliament of India to form a government at the federal level (known as Central Government in India) and exercise its powers. In practice the Prime Minister nominates the members of his or her Council of Ministers    to the President. He or she also works upon to decide a core group of Ministers (known as the Cabinet) as in-charge of the important functions and ministries of the Government of India.
As the head of the government, the Prime Minister is responsible for distribution of work of the Government to various ministries and offices and in terms of the Government of India (Allocation of Business) Rules, 1961  whereunder the Prime Minister's Office  allocates the work to be performed by various Ministries. The work is generally allocated to the Cabinet Secretariat  which in turn acts as a nodal agency for the functioning of the various Ministries. While generally the entire work of the Government in divided into various Ministries, the Prime Minister may retain certain portfolios with himself or herself.
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 put to him by the Members of Parliament  to him or her as the in-charge of the portfolios he holds or in his or her capacity as the Prime Minister of India.  The Prime Minister is also the ex officio Chairman of the Planning Commission of India. He or she also appoints the Deputy Chairman of the Commission, who is responsible for the functioning of the Commission and reports to the Prime Minister.
The Prime Minister represents the country in various delegations, high level meetings and international organizations that require the attendance of the highest government office  and also addresses to the nation on various issues of national or other importance.  He or she also has to his or her exclusive jurisdiction the disposal of two national funds, (i) the PM's National Relief Fund , and (ii) the PM's National Defence Fund , which he or she uses in his or her discretion to the attainment of the objectives behind the establishment of these funds.