All courts have clerks. A court clerk keeps all the papers about the cases in the court and organizes them. The clerk keeps track of the decisions or orders that the judge makes during court and also keeps the courtís schedule.
Witnesses are people who come to court to tell what they have seen or heard. For example, if someone is accused of stealing something, a witness might come to court to say what they saw happen. When witnesses come to court, they have to raise their hand and make a special promise, called an oath, to tell the truth. They take a special seat and the lawyers ask them questions. Cases that last a long time may have lots of witnesses.