Double Bay Window in room corner

[kripto64]

I am new to Home Designer and have grasped must of the software and managed to get a good design going.

But I have come accross a stumbling block with regards to a double bay window in my house which is placed in the corner of the room.

There are 2 issues.

1. The actual structure has post in the corner with beams supporting the roof over the 2 bay windows.
There is no external wall in the corner.
The 2 widows join each other at the corner and are finished with a mullion.
How do I achieve this???

2. Since the bay window did not work I tried to build the wall to the shape of the bay.
The brick wall bellow the bay window is wider than the overhang.
this causes the wall to protrude past the roof.
I have tried to shorten the wall to the sill height but then the window doesn't work.

I have attached the window plans of what I am trying to achieve.
And a picture of the current problem with the walls

Any help would be great.

Thank
Chris