Robots: what search engines may crawl
The robots.txt file tells search engines which parts of your site they may crawl. On this screen you edit its content directly.
The usual setup
For most sites it is enough to allow everything and point to the sitemap:
User-agent: * Allow: / Sitemap: https://www.mycompany.com/sitemap.xml
The Sitemap: line is added automatically when you generate the sitemap.
Be careful
Disallow: /blocks your whole site on Google. Do not use it unless you want it hidden.- Blocking a page in robots.txt does not make it private: it only asks search engines not to crawl it.
Click Generate to save your changes.