fill template - different features along the same slope

Hi,

I'm sure there is a simple way to accomplish this, but we can't figure it out. We are trying to create a simple fill template, but we want to have different features applied at different heights along the same slope, to account for different surface treatments and be able to see them in the model. Our cross section is very simple: constant 1:2 + horizontal sections 3m width every 12m height. Something like this:

We created just one piece of the section and used benching to keep it going since there is no limite to how tall it can be. How can we, for example, just assign a different feature to the horizontal part?

Thanks and regards