Different pricing models at different times

[Gabriele301]

I'd like to have different pricing models for my apartments at different times. At high demand times (like trade fairs in the town) I'd like to charge a high base price and a small additional charge per each extra guest, and at other times I charge a low base price and a higher additional charge per guest. How can I accomplish this in Airbnb? Other booking agents let you have a base price including more than one guest. Is there a similar option in the Airbnb system? Or could I setup an identical ad for one apartment with different rates and policies and link it via a mutual exclusive booking calendar to the default ad? (With booking.com, they prohibit multiple ads for the same property - what is Airbnb's stance regarding this question?)