As soon as you click on Knowledge on the sidebar, you'll get the option to select one or more languages. Choose your language and start off directly!
Don't worry you can add more languages later.
In Experiences you need to activate the text input field in the footer settings. Switch from hide to show to connect your experience with knowledge articles.
On top of that you can decide about your fallback settings. Namely, what happens if no articles are found. Make sure to offer reasonable reasonable fallback options. Find out more in the
Fallback section.
