What you see that looks like glue, is commonly used to fill gaps. It's a type of seam sealer. My guess is that those spots that you see it is where the robots tack welded the piece on, and they used seam sealer to keep moisture out, and as a side benefit, to act as a wind and vibration buffeting. There should be some slide clips/clamps for the leading edge and some form of plastic or metal tree clip to hold it down.I see no holes for clips. Seems to be glued.