Check out our video tutorial on how to place a roof window in a Web app. However, main controllers are the same for the Android app as well, so you shouldn't have any issues reproducing these steps on your device. 

Tip: We recommend you to switch on subtitles to get a better understanding of each step.

Check out the video tutorial on how to add the roof windows. We're using the Web version on that video. However, main controllers are the same for all apps, so you won't have any difficulties reproducing these steps on your device.