I've moved your posts to the Library Parts/GDL forum where they belong.
If you really want help, do not use a subject like "Window Error" - who would know what that is and pay attention to it? Specify your issue clearly in the future please. I've changed your subject both here and in your other post.
If what you want is the illustrated window ... then you model it with two windows stacked on top of each other and 'ganged' together. An arch top over a single pane window (pick your operation type if not fixed).
I'm not sure where/how you want an H-V grid?
One of the forum moderators
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