I have a bay window and am unclear on how I can illustrate the roof above.
I would probably use a plate set at the height of my window and let my roof bear on it. For beneath the window you could also use a short wall.
Or you could build a wall with the siding below the window, use the material non for the in between where the window would sit and add a top plate above the window and make it bearing. Hopefully you can make out what I am saying, otherwise ask again and I can quickly make up the wall and attach the file to this forum.
You would draw a wall on top of the bow window and then draw a bow roof to that wall
You could use a roof as indicated above. Or you could use a symbol. SoftPlan comes with several bay window roof symbols. When adding a symbol type in roof in the search box and a listing of the available roofs will appear. You can adjust them to size if needed after inserting a roof symbol.
Bill is the owner and maintainer of SoftPlanTuts.com
The shapes symbol advice was exactly what I was looking for.