If you increase the Attempts on a question slide, the user can try to answer the question that many times every time they encounter the question in the quiz.
- Thus, if you set the Attempts field to 2 on the question slides and give them 2 attempts to take the quiz, they will end up with 4 attempts to answer each question (2 attempts the first time they take the quiz, and 2 attempts the second time they take the quiz).
If you just leave the Attempts field at 1, the program will immediately score the question when the user clicks the Submit button. That will give them 1 attempt to answer each time they take the quiz.
Bottom line: the "Retry Quiz" functionality will always give the user the indicated number of attempts on each question.
If my explanation still isn't clear, I suggest you simply test different settings in your file to see how they work.