Charter - II : Jurisdiction and general principles - Art. 9.
Art. 9. At the trial of any individual member of any group or organization the Tribunal may declare (in connection with any act of which the individual may be convicted) that the group or organization of which the individual was a member was a criminal organization.
After receipt of the Indictment the Tribunal shall give such notice as it thinks fit that the prosecution intends to ask the Tribunal to make such declaration and any member of the organization will be entitled to apply to the Tribunal for leave to be heard by the Tribunal upon the question of the criminal character of the organization. The Tribunal shall have power to allow or reject the application. If the application is allowed, the Tribunal may direct in what manner the applicants shall be represented and heard.