Power to issue, to include power to add to, amend, vary or rescind notifications, orders, rules or bye-laws :
Section – 21. Where, by any [Central Act] or Regulation, a power to [issue notifications], orders, rules or bye-laws is conferred, then that power includes a power, exercisable in the like manner and subject to the like sanction and conditions (if any), to add to, amend, vary or rescind any [notifications,] orders, rules or bye-laws so [issued].