> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://staging.chrisp.chat/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# How do I use the Enable NOT filter?

The platform allows you to use the NOT filter option when multiple selections are required. This allows you to remove the selected values from your results.

![](https://storage.crisp.chat/users/helpdesk/website/-/d/6/3/b/d63b83d0da40f800/45b02d46-7b8b-4e4a-a167-237506_lmn7qg.png)