Hi, I want to create a "Hint button" (in the right side of the first Figure) and "solution button" (in the right side of the second Figure) for each question individually in the quiz. I want the button can redirect to some youtube video or video in my server. Also, if the users use these button,  the point systems will reduced their points. What is the code needed ? and which part of code should been edited or inserted by the new code? 

Thank you very much