Brainstorm the questions each person might ask. 
Based on their role in the company, think through the types of questions they might ask you during the interview. 
For example, if you’re interviewing for a job as a marketing manager and you find out that one person on the panel is a sales manager, figure out the types of questions he or she might ask, such as: 
When you create a promotional program, what is your process to ensure it will be successful with the sales teams?