I am trying to select the red highlighted area that you see in the image. I can select this region in the normal Part Module by just simply clicking on it with the view cut activated; however, I cannot select this region when trying to assign a section (which I need do to assign it a material property). I have tried crtl+click to unselect regions which is how I was able to assign the green region you see; however, this method was not able to assign the red section. Any ideas on how to select just the red region? Thanks!