How to test:

1. Open Setup → Check your agent
2. Type a question customers might ask
3. Check if the answer is correct and uses your knowledge base
4. Try voice mode by clicking the microphone button

A rehearsal, before anything is connected. On the same page, Run a rehearsal invents a customer from your own business description, lets your agent talk to them for a few turns and tells you plainly whether it handled the customer or needs a look. It takes about a minute and saves nothing: no contact, no lead, no deal on your board. Run it again after you change the instructions or the knowledge base.