(1) The NHMRC Licensing Committee may, by notice in writing given to the licence holder, vary a general licence if the Committee believes on reasonable grounds that it is necessary or desirable to do so.
(2) The NHMRC Licensing Committee may vary a general licence under subsection (1) on its own initiative or on application by the licence holder.
(3) Without limiting subsection (1), the NHMRC Licensing Committee may vary the licence by specifying additional conditions or varying existing conditions.
(4) The NHMRC Licensing Committee must not vary a general licence in such a way that, had a person applied under section 20 for the licence as varied, the Committee would not have been permitted by this Division to issue the licence.