Set up this mock trial in the same manner as a true trial. Open with the prosecution reading charges against each defendant. The defense will then enter a plea for each defendant. Next, the prosecution and the defense give their opening statements which briefly summarize what they hope to prove. The Prosecution is first to present witnesses and evidence against the first defendant.
Defense has the right to cross-examine each witness.
After the Prosecution has finished, the defense presents its case. The prosecution may cross-examine the defense's witnesses as well. After both sides have presented their case, the prosecution and defense then offer concluding remarks. The judges will then recess to reach a verdict on each defendant. When the judges reach their verdict, they announce it and if found guilty, they announce the sentence that each defendant will receive.