LAW on the Implementation of the Statute of the International Criminal Court and the Prosecution of Crimes against International Law of War and Humanitarian Law
II PROSECUTION OF CRIMES IN THE REPUBLIC OF CROATIA
Article 13
(5) In cases where a national competent court lacks a sufficient number of judges who meet the criteria of paragraph 2 of this article, the president of the Supreme Court of the Republic of Croatia may for the needs of the case in question designate a judge from another county court.
EDIT.