What is the most important thing to remember in an interview preparation ?

You have to read the cv of the candidate as well and preparing the questions according to the position and the experience of the candidate You have to prepare the interview feedback form , If you will make an online interview you need to get a quiet room and to check the connection of the Internet You have to prepare the questions according to the experience of the candidate and his cv You should to know if the time is good to him to do the online interview or no And this aslo for the phone interview

To always have a positive outlook for first impression; relax and be short ,precise and professional with your intro and answers to questions.. last and most important of all is to thank the panel for the time spent.