I tried to do what is shown in the link, but the is no "main Calibre icon" on my GUI, and I cannot make it appear either.
The tiny Calibre icon in the top left corner has nothing to do with export. I looked thru all the settings but could not find an export feature.
Another issue I have is that I can share folder between Windows & Linux, so I only want to export the Calibre settings in Windows & import them in Linux. Is that possible