Adding "Force FB share to see results" button in WP Pro Quiz

Hi, I want to add below two options for my wp pro quiz wordpress plugin. 1. Negative marking (3 wrong answers = 1 minus mark or 2 wrong answers = minus 1 mark or 4 wrong answers = minus 1 mark) for some quizzes. (attaching 1,2 screenshots for reference) 2. "Force facebook share to see result" button before showing the result of every quiz. That means, every user must share the quiz link on facebook, to see his result. This option is there in WP Quiz Pro (mythemeshop's plugin, I am attaching 3 screenshot for reference). I appreciate if anyone can do this for me.