Could anyone of you give me tips on how to deal with panel interviews?

treat panel interviews like any other interview. you need to do the same kind of preparation and mental attitude.

these things work :

• do some research on the company and products, form an opinion on them
• work on a few "images" you want to cultivate about yourself and make sure your examples about you and your answers go back to these images.
• work on a very few and select images, no more than 3 --- "leader", "fast learner", "good communicator" for example could be the images you want to cultivate
• make sure these images are meaningful to the company, to the job and you can deliver.

on panel interviews:

• panel interviews normailly mean they are in a hurry to hire.
• it also means you might not get another chance, so make sure you pass the panel interview.
• it would be good to connect and cultivate a dialogue with one panel interviewer who appears to be the person who has the most power to hire.
• but do not snob the others. don't ignore everyone else because if you do they will be antagonostic against you. they might give you a hard time during the interview.
• make eye contact to everyone