@Pam2213 I don't think you can charge more asa party of 4 could easily use all 6 beds depending on their relationships. This is one reason why pricing per person does not work well. Far better would be to have a 3 bedroom listing and a 2 bedroom listing (or whatever suits your property) and link the calendars. Then lock the unsold bedrooms.
This method also has the advantage that you are not trying to see exactly how many people arrive at your place.