Don't know if this will help or not, but I had a "group interview" a few months ago .... I had to face the nurse manager, two of the patient care coordinators, one of the RNs and an LPN. I tell you I was so nervous I almost threw up on my shoes
They took turns asking me questions that ranged from the general (educational background, why I was applying for the position, what skills I would bring), clinical judgement and assessment skills (what I would do for a patient with XXXX, how I would handle a difficult patient/physician/team member), to what my future goals and aspirations were.
i wish i could be more specific, but its all a blur now.
Wear something that makes you feel good, take an extra copy of two of your resume, smile, shake hands, and be confident in your own ability.... and good luck!