Section 8(1)(b) in The Cost and Works Accountants (Procedure of Investigations of Professional and Other Misconduct and Conduct of Cases) Rules, 2007
(b)if the complaint is against a firm, send particulars of the acts of commission or omission alleged or a copy of the complaint, as the case may be, to the firm at the address of its head office, as entered last in the Register of Offices and Firms maintained by the Institute, with a notice calling upon the firm to disclose the name or names of the member or members concerned and to send particulars of acts of commission or omission or a copy of the complaint, as the case may be, to such members: