Overlapping window geometry (TRNLizard)

Using TRNLizard TOOL:

I would like to draw a shoe box geometry (sketchup geometry below) which has two window sections. Therefore, I have manipulated the component which generates the window surfaces. In order to that, I have manually calculated the centre points of the window surfaces using the lower boarder (lowB) and upper boarder(upB) of each window. Each window has a clearance of 0.01m from east, west side and also in the middle of two windows(note that windows were placed on the south wall). After that, I have scaled the duplicated brep using the Transform.Scale Method (Plane, Double, Double, Double).

The design not working as expected and I have overlapping windows. Could you please guide me on how to fix this problem? Or Is there any easier way to draw such window surfaces.