New authors (indeed, all authors) should always read the category guidelines for the category in which they intend to place their quiz - there's a link at the top of the template once you have placed it in the intended spot. There they will see the restrictions in place for that exact sub-category. This often includes advice to play existing quizzes in order to avoid duplication of questions, as well as detailed information about some of the common errors made in new quizzes for that category. First time authors aren't discouraged from writing quizzes, but they are encouraged to avoid categories and types of quiz that will not work. If the advice in the guidelines makes it sound too hard (no need to play all 657 Harry Potter quizzes, but if you want to write a quiz on spells, there are 37 to check), they should probably rethink their plan and find a more accessible category.
(Editor in Humanities, Literature and Books For Children)
That's all, folks!