Most often, it is the nursery group who are the first brought into the hall. While they are being seated, you calmly say hello to them in a quiet voice, try to make contact. Say: "Guys, it's great that you came, I'm so glad! You are so beautiful and smart! How did you eat today? We will blow bubbles now, but we must wait for other kids." Speak in an even voice, then the child will begin to trust you at least a little and calm down.