The option for commercial window is not in the D1 Commercial USA settings area of the part it's in the Parameters/Door Panel/Commercial Window. It's an on /off toggle.
This use to be available in the old 8.1 version of the door when used with the flush door it would show the window in the 2d view adjusted to the size you specified and could be used in a schedule.
It's still in the part but it doesn't work correctly and it has not been incorporated into the settings portion of the library part.
I wish Graphisoft would stop their practice of adding three features and taking away one with each release.