When setting up your roof, make sure that you put your spring /pivot point in the right place for the type of roof that you use. Especially if you have strict boundary requirements.
In the image below, we are using a trussed roof. There for the roof needs to pivot / spring from the outside face of the wall
Yet in the next image, where we are using a raftered type of roof construction, we have to set the spring point from where the rafter makes the first connection with the top plate of the wall frame
This may not seem that important, but in some cases it can be the difference between getting or not getting a permit