Your instructor may set it up to allow multiple people to speak at once it just kind of depends on how he or she wants to do it and so the whiteboard generally will be set up with slides whatever your instructor has prepared for your class and these tools allow you to interact with that information so the most commonly used tools probably are the pen tool that you can emphasize something in what you might call "markup" or the highlighter tool you can also add text if you are doing some brainstorming 