I am using HD Architectural 2016. I want to create my own gable roof I have followed the tutorial to a "T". And its not working, when I go to camera view there is no roof. Also I don't see the tool " join roof planes " on my mac. I wonder if this tutorial is for a pc. I've spent hours trying to figure this out and i'm about ready to do it the old fashion way pencil and paper. Thanks for any help.