When you want to copy an article into an other structure level, start as follows::
1. Go to the article center
2. Press of the article to move. The symbol changes to and the line will be marked with a green bar showing that the right article is selected. (Image 1)
Now you can see a green arrow at every structure level . This shows you that there you can insert your selected article.
By pressing the red arrow you insert the article into the selected structure level. A an orientation help the line is marked light green. (Image 2)
Now you can see that the article has been inserted into the selected level. (Image 3)