After repeated attempts to populate the KODI library from a USB harddrive, I suspect that I need to try another controller. (Using the Logitech K400). I can "Enter Files Section" click on a drive which displays directories, click on a directory which opens and displays more directories or files and play a media file -- but I cannot seem to find a way to select a directory in order to add it to the library. (Configuration: LibreELEC 9.2.6, KODI 18.9.0, Rpi 3b.) I'm new to this (but think I am following instructions as closely as possible.)