Hi Again, next step, I apologise for not asking this earlier.
When my partner 'Adds' books to Calibre, the only option seems to be to click on the epub file, so he's not getting the metadata, only the epub file.
Is it possible for him to 'add' all of that? I suggested he add the files to his Calibre Library folder and that Calibre would recognise them next time he opened it, but no joy.
Am I missing something vital?
(the 'copy' process worked perfectly this time, thanks theducks

)
Many thanks