The Window tool allows you to place a variety of windows by clicking on parallel lines in the drawing. The tool provides a variety of options and also the ability to place a storefront. Your windows can be single or double glazed, with any number of panes. To place a window, click on one wall line, drag to the second one, and then move the mouse to locate the window.
Storefronts are now a piece of cake.
Click on the wall lines and then move the mouse around until you get the right number of panes.