When I open the main menu it opens the sub category menu window and show 2 or 3 layers of sub categories on the same menu window. http://prntscr.com/k36w23.
How can I make sure only one level of sub category is shown on a window. So it will open a new window per sub category.
I have so many catgories that with more sub categories shown on the same window won't fit the screen.