(2) Without prejudice to the provisions of sub-section (1), and subject to the rules and orders of the Central Government regulating the conditions of service of persons in public services and posts, the Central Government may authorise the Board, or a Principal Director General or Director-General, a Principal Chief Commissioner or Chief Commissioner or a Principal Director or Director or a Principal Commissioner or Commissioner to appoint income-tax authorities below the rank of an Assistant Commissioner or Deputy Commissioner.

(3) Subject to the rules and orders of the Central Government regulating the conditions of service of persons in public services and posts, an income-tax authority authorised in this behalf by the Board may appoint such executive or ministerial staff as may be necessary to assist it in the execution of its functions.