Different amount of payment per number of guests.

I want to make it 5$ cheaper if only one guest occupies the room but i dont know how.

Isle of Wight …

Why? Is it cheaper to own the room if only one person there? What will you do when someone books for one person (to save money) but arrives with 2?

We charge a flat rate for the property, regardless of how many people come .... works fine for us ....