Does the Act also cover real estate agents? What are the duties and responsibilities of the real estate agents?

Section 9 of the Act provides that real estate agents which engage in selling projects registered under the Act, can only do so after registering themselves with the Authority. The mechanisms for registration, the fees payable, the period of registration, subsequent renewal etc. are matters to be detailed vide the Rules.
Section 10 of the Act provides for detailed functions and duties of real estate agents.