@Tour75
You need to set a fee for extra guests:
https://www.airbnb.com/help/article/1507/how-do-i-add-a-fee-for-additional-guests-to-my-listing
But your listing shows me it is a place where multiple rooms can be booked for 1 to approx. 6 guests..
So you need to create a listing for each room (with the extra guest fee option).
PLease make yourself more familiar with the platform BEFORE activating a listing, by reading the HELP files.
Also reading @Robin4 's Hosting-Handbook-for-Wise-Dummies is good way to start: