> For the complete documentation index, see [llms.txt](https://docs.projectsend.org/about/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.projectsend.org/about/how-to-use/files/categories.md).
# Categories
Files categories can be managed by system users only in `Files -> Categories`. Clients do not have access to create them.
**Clients will only be able to view and filter files by categories in which they already have files assigned.**
Each category has a name and description, and optionally a parent or children categories.
Categories administration page
Taking inspiration from WordPress' UI, the categories administration pages features 2 columns. On the left side you will find the existing categories, ordered hierarchically.
On the right side, a double function form that servers both functiosn to create a new category, as well as the editor when modifying an existing one.
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# Agent Instructions
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## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://docs.projectsend.org/about/how-to-use/files/categories.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.