@Graciela65
https://www.airbnb.com/help/article/1515/what-should-i-do-if-my-guest-brings-extra-people
If you’re unable to accommodate the larger number of guests, let your guest know that your place isn’t the right fit for their group size, and ask them to cancel their reservation. They’ll be refunded according to your cancellation policy
That's the booking policy in italics above, either ask the booker to cancel or you can let the booking stand with surplus guests to go elsewhere but you should consider what is likely to happen next with guests conduct.