The Parliament of India is bicameral. Concurrence of both houses are required to pass any bill. However, the framers of the Constitution of India anticipated situations of deadlock between the Rajya Sabha and the Lok Sabha. Therefore, the Constitution of India provides for Joint sittings of both the Houses to break the deadlock.
The joint sitting of the Parliament is called by the President of India (Article 108) and is presided over by the Speaker of the Lok Sabha or, in their absence, by the Deputy Speaker of the Lok Sabha, or in their absence, the Deputy Chairman of the Rajya Sabha. The Chairperson of the Rajya Sabha, who is the Vice President of India, doesn't preside over the joint session. If any of the above officers are not present then any other member of the Parliament can preside by consensus of both the House.
At present, the Central Hall is used for holding joint sittings of both the houses of parliament, which is also used for address by the President in the commencement of first session after each general election.