How do I put my name on calendar in Riverside County court?

You don't. You go to the clerk's office, having them pull your file and send you into the courtroom assigned.

I don't think it is that simple. In most courts, you have to appear on the morning you want your case heard. It is called a "walk-on" or "add-on" and you must go to the clerk's office as soon as the court opens. If you are late, the clerk will not put it on calendar. Some courts, like Ventura Superior Court, you need to call the clerk the day before and ask them to calendar it and you must state the reasons. You should also contact the prosecutor's office so they can pull the file or you will be waiting in court for them to retrieve the file from their office. I would advise that you contact the Riverside court clerk and ask them how which way they do walk-ons.

You probably have to get a lawyer or go to court early in the morning to see if the case can be added on that morning or a different morning. You might call the court clerk, criminal division or go on the internet.