Select the DC in the Component tray and then right mouse click and select properties. That will let you go for the 'Glue to' and the 'Cut Opening'. I tried this on your DC just now and and you will need to open the DC for editing, select all the sub-components and move them down to the Z=0 position for the vertical 'glue to' to work. At present the back of the whole component will stick to the outside wall face. (try it first after setting the 'glue to'. Also, to cut the outer wall face create a rectangular face (inside the DC) level with the outer wall face. Delete this face to leave just the bounding lines. Do not group these, they form the cutting element. Exit the DC and bring in a fresh DC from the tray - this should now give you the one face opening cut.
Attached modified DC to pick at. I have an updated window to add to my own post shortly.