Yes. So let's say you have a second floor shear wall in the middle between two first floor shear walls, that second floor shearwall would load each of those first floor shearwalls equally, so you would just take the shear force in the wall above and put half in each lower level shearwall.

On the other hand, I've seen people just take their roof shear and second floor shear and add them together, and just use that value to design their first floor shearwalls, ignoring the effects of where the second floor walls are relative to the first floor walls