Hi!
From my understanding, a 'panel interview' is usually an interview where there are two or more interviewers at the same time (so it is usually a mix of partners, senior associates, HR, etc.). It is different from a normal interview in that they may take turns asking questions or build on each other's follow-ups, or one might lead and the other(s) observes and takes notes.
In terms of content, I would say it is likely to be similar to other AC interviews - it is usually a mix of motivational, commercial, and competency questions. There may also be situational or strengths-based questions as well!
My main advice would be to maintain eye contact with whoever is asking the question initially, but when you answer, involve the whole panel and speak to them all. Best of luck with the AC!
