(1) The regulations may prescribe—
(a) conditions on licences; and
(b) when conditions on licences (whether imposed under the regulations or by the registrar) take effect.
(2) The registrar may amend a licence by putting a condition on the licence, or by amending or cancelling a condition the registrar has put on the licence, at any time by written notice given to the licensee, unless the regulations provide otherwise.
(3) The registrar may amend a licence by putting a condition on the licence, or amending the licence, only if satisfied that it is necessary or desirable to protect the public.