This functionality was added in FUDforum 2.6.8
If you have a large forum You often split them into categories, but often you want to be able to concentrate one portion from the other, so there should be an option to have subcategories, one or mor. for example, if you have a product 'foobar' and three actual version, you want it to be more splitted:
+ foobar 3
+ Devel
(forum) API
(forum) CLI
(forum) GUI
+ User
(forum) FAQ
(forum) Question
(forum) Request
- ZZzzz
- etc...
+ foobar 2
+ Devel
(forum) API
(forum) CLI
(forum) GUI
+ User
(forum) FAQ
(forum) Question
(forum) Request
- ZZzzz
- etc...
+ foobar 1
+ Devel
(forum) API
(forum) CLI
(forum) GUI
+ User
(forum) FAQ
(forum) Question
(forum) Request
- ZZzzz
- etc...