(1) The Minister may make regulations to provide for treating as an insured person under this Act—
(a) a person under 16 years of age;
(b) a person over 60 years of age;
(c) a self-employed person;
(d) a person who though not liable under this Act to pay contributions, wishes to do so voluntarily.
(2) Any such regulations may provide for such modifications of this Act as may be necessary for the purpose of giving effect to this section.