How do lawyers introduce themselves in court as entrusted agents? What information should be submitted to the court?

Before the trial, the court will ask the parties and their agents to introduce their identity and agency authority. As an agent, a lawyer should first say whether he is the plaintiff's agent or the defendant's agent, what's his name and which law firm's lawyer, and finally explain the agency authority, especially the authorized content. In addition, since lawyers appear in court, this is the most basic common sense.