> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://authorea.crisp.help/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 to add a co-author or collaborator


![](https://storage.crisp.chat/users/helpdesk/website/956ad655c6bd5000/js_664skq.gif)