SEO Configuration
Do configure the keywords for the respective languages so that your potential users are able to locate your exchange from the various search engines.
XML Sitemap
ChainUp does not support the generation of XML Sitemap, kindly use a third party.
Once you have generated your XML Sitemap.
Upload it to the Exchange Backend, then submit it to Google:
https://xxx/fe-sitemap/sitemap.xml
(xxx is your domain name)
Do consider referring to google guidelines.
Google indicate a few options on which third party to generate sitemaps:
https://developers.google.com/search/docs/advanced/sitemaps/build-sitemap