We know that, then explain to us how to make the call in different categories and set the learning path without using quizzes as in math exercise I need to call the mathematical exercises one that belongs to category 1, then the math exercise that belongs to category 2. But when the student comes to the exercise also appears the English exercises 1 and 2 too. we do not want to appear the English exercises to who is doing the math. The problem is time that we need to call the exercises using the menu where you configure the quizzes. Or he calls the root here comes all categories or he calls one category only, which does not satisfy us, since we have more than one category for math exercise.