I am trying to create an educational website.
As I mentioned in the title, my requirements are to add 3 main categories, the first category has 7 subcategories, each subcategory has 6 subcategories.
Ex: Main category: Courses
7 subcategories (English, French, math, physics, etc.)
7 subcategories for each subcategory ex for English (grammar, comprehension, etc.)
I don't know how to do that with the taxonomy, could someone give me a hint? Thank you