PART II - POWERS OF THE COURTS
8 Combination of sentences
(1) Subject to the provisions of the Criminal Code 1899 and of any other written law, the Supreme Court and the District Court may pass any lawful sentence combining any two or more of the sentences which such Court is authorised by law to pass.
(2) In determining the extent of the jurisdiction of the District Court under section 7 of this Act, any term of imprisonment which is, or may be, imposed in default of payment of a fine, costs or compensation shall be deemed not to be a sentence of imprisonment passed in respect of the offence for which the fine was imposed.
Joint sentence following multiple convictions - national proceedings
EDIT.