Does AirBnB insurance cover unexpected guests?

I just had a guest ask if they could allow some friends to spend the night for the extra $10 per person charge. I’m wondering if the AirBnB $1M insurance policy for hosts would extend to these extra guests if something happened or if they damaged something. Is there a way to amend a booking to add extra guests AFTER check in? Does anyone here know?

Yes, you can change the number of guests after check in. I’ve done it a few times.