First, you made a gaggle of the internal wall faces after which drew the rectangles for the home windows exterior the group. Earlier than including the rectangles for the window openings it is advisable open the wall group for modifying so you’ll be able to add geometry to switch the partitions. The opposite factor you’ve executed is put the internal wall faces in a gaggle inside a gaggle that incorporates the outer wall faces. With that association for those who put the rectangles for the home windows contained in the internal group and push them by, the outer faces received’t get minimize. Seems like the simplest factor to do for the time being is to blow up the entire teams, minimize you openings and repair the face orientations. You shouldn’t have any uncovered blue faces.
Be aware you’ll have some hassle with the home windows I present chosen, beneath, as a result of the within and outdoors faces of the partitions aren’t parallel to one another. They in all probability needs to be fastened to make them parallel.