Hallo Isabelle, das ist ne leichte Frage.
Fuer mich ist sie das - but perhaps not for you as you find it confusing, clearly.
The answer can be foud in you pricing settings.
Have a look when you go to manage your listing(s), go to pricing, scroll down to extra charges, there is an extra guest charge.
click on "edit". Scroll down again.
Now you can amend/adjust/delete the charge for extra guests, counting after the first or second guest, or third, that is up to you.
In my case I have a whole 2-storey house on offer and when there are only 2 guests I charge the standard room charge only, or if the whole house is required and I have to vacate my home, for example if the party consists of more than 2 guest, i.e. 3-6 people, I will charge for the 3rd guest, the 4th, the 5th and the 6th an extra amount to cover for my overheads.
(e.g. me moving to another location, extra usage of water/electricity/gas/towels/bedlinen/cleaning after check-out may jusify another $50 per additional head) Any hotel you go to also has a max. number of people per room restriciton, then extra charges will apply.
If you only want to charge a flat charge regardless, it may be best to set the extra guest rate to $0.
Does this make sense and have I answered your question?
Gruss aus dem schoenen Sydney,
Frank