Honestly, i would think just be confident abt yourself and it’s important to be like you know what you are doing and are in control of the situation at all times. I don’t think there is any right answer for this since the panel may not always be the same people. Ultimately, the interviewers are just giving you a teaser of what may to come when you sign up for teaching. If you are not able to control 3 or 4 of them, i don’t think u are ready to take care of 30-40 of real students. Just my opinion.