Add content
Open Knowledge Base and upload a document, or crawl a website: give the URL, choose whether to include sub-pages, and set a maximum page count. Add a short description so teammates know what each source covers.
Attach to an agent
On the agent's Knowledge tab, choose which documents it may use. The agent searches them when a caller asks something they cover.

Instant answers
For questions that must always get the same wording (opening hours, the cancellation policy), add an instant answer on the Knowledge tab instead of relying on retrieval.
Tuning
If the agent answers from the wrong source, split large files into smaller ones with clear titles. Keep prices and policies in their own short documents so updates are easy.
Documents can also be created and attached over the API: Create knowledge document.