Hi all, I have just installed Discourse for the first time and I must first of all say it is extremely nice and overwhelming at the same time, I have struggled in finding out how to make a Sub-Subcategory or something of it’s nature, I have seen another website which uses Discourse to set their forums up how I am trying but I cannot seem to find out how they have used this feature, any help will be greatly appreciated.
Below is an image of their forums.