Is it possible to change the opacity of trees in twinmotion?

I’m working on a rendering and trying to get the vegetation in the correct location. The way my camera is set, it means some trees are in front of the building I’m rendering. Is it possible reduce the opacity of tree’s in Twinmotion? I’ve seen it in some renderings online, but I’m not sure how it’s done.

Thats usually done in post. Because there isnt a way to change their opacity, I recommend adding those trees in front to a different render layer, and exporting with render layers on. Then select the layer with the trees and modify their opacity in photoshop or another image editing software.