# Subforum structure

**URL:** https://meta.discourse.org/t/subforum-structure/242711
**Category:** Support
**Created:** [October 23, 2022, 10:27am UTC](https://meta.discourse.org/t/subforum-structure/242711 "2022-10-23T10:27:14Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![Keph](https://avatars.discourse-cdn.com/v4/letter/k/ecccb3/32.png) [@Keph](https://meta.discourse.org/u/Keph)
#### Post date: [October 23, 2022, 10:27am UTC](https://meta.discourse.org/t/subforum-structure/242711/1 "2022-10-23T10:27:14Z")

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Hello.

How to create 3 levels of category structure in forum (see image)?

1. category → 2. subforum → 3. subsubforum

 ![discourse-arduiono](https://global.discourse-cdn.com/meta/original/4X/7/1/e/71ebb72312c37aeb6c058c05d0cf7661c36a47c3.jpeg)

I can’t find anything in the settings.

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### Author: ![Moin](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/moin/32/554653_2.png) [@Moin](https://meta.discourse.org/u/Moin)
#### Post date: [October 23, 2022, 10:30am UTC](https://meta.discourse.org/t/subforum-structure/242711/2 "2022-10-23T10:30:09Z")

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> [@Number of Subcategories](https://meta.discourse.org/t/number-of-subcategories/146632/11):
>
> You need to have access to the server where Discourse is running. If you’re hosted somewhere, you’ll need to ask whoever is running the server to do this for you. cd /var/discourse ./launcher enter app rails c SiteSetting.max\_category\_nesting = 3 exit exit

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### Author: ![Jagster](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/jagster/32/192154_2.png) [@Jagster](https://meta.discourse.org/u/Jagster)
#### Post date: [October 23, 2022, 10:56am UTC](https://meta.discourse.org/t/subforum-structure/242711/3 "2022-10-23T10:56:27Z")

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And then there is a big risk some other things will break.

Deeper nesting category structure is a solid way to get off topics and difficult searches.

I give an example.

Topic includes

- working dogs
- that are eating raw food and dry food
- has some skin issues
- and needs some nutraceuticals

Should such topic be found in

- dogs → breeds → working dogs
- food → styles → raw or dry food
- health → skin → skin of fur → allergies or something else
- nutrition → nutraceuticals or functional ones → vitamins, minerals, fats, proteins or something else

And if we go deeper — should e.g. vitamins have 4th level where can be found vitamins A, B, E, D etc. Minerals are much wider question.

But there is a solution \0/ : tags

Categories have only one level, perhaps two in some cases. And everything else is done using tags.

I challenge all admins who are so sure multileveling is must, giving to an ordinary user task to

- create a topic in **right** category
- find something

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### Author: ![system](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/system/32/443519_2.png) [@system](https://meta.discourse.org/u/system)
#### Post date: [November 22, 2022, 10:57am UTC](https://meta.discourse.org/t/subforum-structure/242711/4 "2022-11-22T10:57:14Z")

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