Custom roof. Tutorials do not help.

[rulllesss]

Hello,
I'm new to Sweet Home 3D, but find it quite useful.
I have been trying to build a roof. I went through some videos and samples how to build custom roof from walls (then export to obj and import as furniture)
The problem is that one part of the roof can be be build from either rectangular triangle (slooping wall) or rectangle (simple wall). What I need is parallelogram.
Pleae look at the image
here is where I stucked

Could you suggest how can I get parallelogram (which can not be done as 2 rectangular triangles) ?

[Puybaret]

Hello,
Maybe you could try the Shape Generator plug-in available here.
You can also create a dummy room at an upper floor, export it at OBJ format and import the generated file, or use a box + 2 triangles.

[rulllesss]

Thanks a lot. That helped!