Schedule 15, Part I of which contains the basic rules for determining whether or not a policy is a qualifying policy, Part II of which makes provision for the certification etc. of policies as qualifying policies and Part III of which modifies Parts I and II in their application to certain policies issued by non-resident companies, shall have effect for the purpose of determining whether or not a policy is a qualifying policy; and, accordingly, any reference in this Act to a qualifying policy shall be construed in accordance with that Schedule.