Controlled residential ventilation: place supply air in bedrooms in the wall.

As mentioned, the two windows in the [Zwerchgiebel] are floor-to-ceiling.

I do not understand the problem. In our model house estate, they are always in front of the floor-to-ceiling [bodentiefen]

the desks? what does it look like then and what a waste of floor-to-ceiling windows for the sake of light incidence is that? no, I don't want that

The air outlets!

then I still haven't understood what you mean by before, in the ground then or what?

Yes, air vents in the floor, because that's the simplest, basically the counterpart to the vents on the ground floor. And since, as you have also noticed, nothing is placed in front of a floor-to-ceiling window, it is not disturbed in the flow there either.