Tips for a "board" or group interview

Hey all. Currently a MICU nurse with two years experience. I am currently in the process of interviewing for a STICU job at a level 1 hospital. I have had one interview with the manager and have talked with a few staff members. I now have a second interview this week in what sounds like a "board" interview. This is new for me. Not only is the interview scary but STICU is way out of my comfort zone but I know it is something that I would really enjoy. Please help with tips and past experiences. Thank you so much.