Unique identification requirement expanded and time-extension power granted to address compliance for related persons. Amendments refine definitions and expand the persons required to obtain unique identification numbers, expressly including approved users of broker terminals and directors and operational personnel of asset management companies (limited to the top three tiers of management and other employees identified by the intermediary). The Board may extend time for classes of related persons to obtain such numbers by Gazette notification to prevent genuine hardship, with failure to obtain numbers within the extended period rendering the prohibitions applicable to the intermediary or specified listed company; the Board may also issue circulars or notes to clarify application or interpretation.