What it does
These Regulations give the International Sugar Organization a formal legal status in Australia and a small set of specific legal benefits. They do three core things, as expressed in the text.
First, Regulation 3 declares the International Sugar Organization to be "an international organization to which the Act applies" (Reg 3). The Act referred to is the International Organizations (Privileges and Immunities) Act 1963, identified in Regulation 2 (Reg 2). That declaration is the mechanism by which the Act's framework becomes applicable to this Organisation; the Regulations themselves do not restate the Act's provisions but bring the Organisation within the Act's scope.
Second, Regulation 4 gives the Organization corporate legal capacities. It makes the Organisation "a body corporate with perpetual succession", gives it capacity to contract, and expressly enables it, "in its corporate name, of acquiring, holding and disposing of real and personal property and of instituting legal proceedings" (Reg 4). Those are positive legal capacities that affect how the Organisation can enter commercial relationships and use courts.
Third, Regulation 5 creates a limited tax exemption for certain office-holders. It provides that a person who is an Australian resident for the purposes of the Income Tax Assessment Act 1936 and who holds an office in the Organisation that falls within "paragraph 6(1)(d) of the Act" shall be exempt from taxation "on so much of the salaries and emoluments received by him from the Organization as are in respect of the performance outside Australia of the duties of his office" (Reg 5). The exemption is therefore conditional (a resident, an office qualifying under the Act, and the income must relate to duties performed outside Australia) and partial (only so much of salary/emoluments as are in respect of those outside-Australia duties).