seat pitch old cabin editor

I have a question about seat pitch (legroom) in old cabin editor. I want to increase seat pitch in business but not economy. Is this possible in the old cabin editor?

Imagine example config:

100 seats economy

20 seats business

space utilization 100% (example)

If i put just 18 seats business and 100 seats economy, my cabin will be 97% utilization (example).

Does this increase seat pitch in both cabins? (C/Y ?)

Because I do not find a tool where I can put less seat capacity on the plane and tell the system to use the spare capacity to increase legroom in a specific class.

Ideas?

The old editor will be replaced soon, so you may want to hold off until then.

But to answer your question, this thread ( http://community.airlinesim.aero/topic/5365-seating-space/ ) from before Aspern indicates that the old editor works on percentages, dividing seat space between all classes, not just one specific class.