At the start of a game you can choose three Experts from your collection to go onto The Wheel. You opponent will also choose three and a final Expert will be chosen at random from all available Experts.
When you land on an Expert and have a question to answer you can press the "Ask the Expert" button to get advice from the Expert. Before pressing the button, the Expert will react in a way to give you a clue to how likely they are to be able to help.
When the Expert gives their advice they won't try to trick you. So if they say they definitely know the answer you can believe them.