Ordering Folders


I am using the "newish" navigation pane with my projects. I have several reports and sheets that a typical user does not need to view or use. I have moved all of those to an "admin" folder. Unfortunately, "admin" puts the folder at the top of the list. Is there a character that I can use to put it at the end of the list (other than "Z"). I was hoping that there was a unicode character I could use, like whitespace, that would push it to the end? I current have it as "z_Admin", but that does not look very professional. I was hoping underscore or some other character added to the beginning would move it to the end. Any thoughts?