Prime Minister of India
The Prime Minister of India is the leader of the executive of the Government of India. The prime minister is also the chief adviser to the President of India and head of the Council of Ministers. They can be a member of any of the two houses of the Parliament of India—the Lok Sabha (House of the People) and the Rajya Sabha (Council of the States)—but has to be a member of the political party or coalition, having a majority in the Lok Sabha.
Cabinet Secretariat (India)
The Cabinet Secretariat is under the direct charge of the Prime Minister. When any policy is made in the Cabinet Secretariat there must be signature of Prime Minister and Cabinet Secretary of India. The Prime Minister of India is the Head of the Union (Federal) Government, as distinct from the President of India, who is the Head of State. Since India has adopted the Westminster model of constitutional democracy, it is the Prime Minister who oversees the day-to-day functioning of the Union (Federal) Government of India.