You can add a question to any clue or the hunt itself, and it will be presented to your player after they complete the clue (or the hunt). The question can either require an answer (a quiz) or it can just be used to collect information (a poll). You may add both a quiz and a poll if you wish.
To create one for your hunt, tap More Hunt Details from the Edit Hunt screen, then tap Quiz at End (or Poll). You should see a screen like this one:
Enter a question, and an optional image here. Then choose the way you want players to answer it, by tapping Answer, to see this screen:
Choose from one of the formats: Choice, to present a multiple select list; True/False, to present a Yes or No answer (you can change the text of the Yes and No); Text, to have your players enter some text; or Number, to have them enter an integer value.
If you’re creating a quiz, you will also want to specify what the correct answer is. For Choices and True/False questions, you do this by tapping at the right side of each item to move the blue check mark. For Text, you have the option of loosely matching player’s responses; this will ignore whitespace, punctuation, and capitalization, and match anywhere within their answer.
For quizzes, you may also enter an explanation that will accompany the answer your players provide. This gives you the opportunity to elaborate on the correct answer. You can also provide an optional explanation if they got it incorrect.
You can test out how your question will work; just press the Test button at the bottom.