I wanted to create a folder on the hub to use as a convenient backup place for some data from my pc network. Contained in the backup files are some .mp3 and .jpg files that I didn’t want to be cataloged and viewable on the hub.
The solution was to create a linux hidden folder (begins with a period) named .backup and store the data there. The hub media cataloger now ignores them.
BTW, I couldn’t use Windows Explorer to create the folder 'cause it doesn’t like a folder name that begins with a period, but doing a Mkdir command in cmd.exe window worked fine.