Is it possible to combine pricing per guest with a max price per night?

[Jo992]

Hello, I hope someone may be able to advise please: 

My property can sleep 8 people in 4 rooms. 

In order to make it accessible to smaller groups, I have set a pricing rule so that we show a 'basic' price for 2, and then charge extra per guest after the first 2. 

However, I would like to cap the price increases at 5 guests (i.e. price goes up for 3, 4, 5 guests, but then remains at the same rate for 6, 7, 8 guests). 

Does anyone have experience of setting up such a rule? 

Many thanks in advance!

Jo