(1) This section applies to an agreement (a "multiple agreement") if its terms are such as-
(a) to place a part of it within one category of agreement mentioned in this Act, and another part of it within a different category of agreement so mentioned, or within a category of agreement not so mentioned, or
(b) to place it, or a part of it, within two or more categories of agreement so mentioned.
(2) Where a part of an agreement falls within subsection (1), that part shall be treated for the purposes of this Act as a separate agreement.
(3) Where an agreement falls within subsection (1)(b), it shall be treated as an agreement in each of the categories in question, and this Act shall apply to it accordingly.
(4) Where under subsection (2) a part of a multiple agreement is to be treated as a separate agreement, the multiple agreement shall (with any necessary modifications) be construed accordingly; and any sum payable under the multiple agreement, if not apportioned by the parties, shall
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