For example, in questions bank i have parent category named TEST with 5 subcategories named TEST 1 - TEST 5. In each subcategory i have for example 5 questions. I would like to create new quiz from random 5 question from subcategories of TEST category, but it chooses just one random question from each subcategory. In my case, i have created 14 subcategories, so i would like do it at once. It is possible? Thanks for your answer.