Conditions of registration for stock brokers and sub-brokers updated, requiring exchange membership, Board approval for status changes, and grievance redressal. Amendment adds definitions for key terms including change of status or constitution and change in control, and inserts parallel conditions of registration for stock brokers and sub-brokers: stock brokers must hold membership of a recognised stock exchange, comply with exchange rules, obtain prior Board approval for status changes to continue acting, pay Board fees, and address investor grievances within one month with reporting to the Board; sub-brokers must hold a Board certificate, be authorised in writing by a member broker, comply with exchange rules, obtain Board approval for status changes, pay fees, and ensure grievance redressal.