The Private Health Insurance (Medical Devices and Human Tissue Products) Rules may, in relation to * cost - recovery fees, specify, or provide for matters relating to, any or all of the following:
(a) the person who is liable to pay;
(b) methods for payment;
(c) extending the time for payment;
(d) refunding, in whole or in part, an amount paid;
(e) applying overpayments;
(f) rules relating to fees to be paid in relation to specified activities.