how can i list 2 different prices for my rental based upon the amount of guests?

[Sally802]

I have a tent on the property that i can rent to guests in addition to the Airstream

[Ann72]

@Sally802  Do you mean you'd like to let guests rent the tent and the Airstream together, as well as have different groups rent the tent and the Airstream separately?  Or would they be too close that that would be awkward?  If the latter, you could have two listings, one for the Airstream only, and one for the Airstream plus a tent.  If the former, you could have three listings, one for the Airstream, one for the tent, and one for both together.