We should be able to assign a file to several categories (not only one)!

Hi,

Thanks for your feature request here. This is something we have planned for a future major release: version 4.2 (we are currently in version 3.7.5).

Though it’s hard to give a precise date on new features release for various reasons.
It mainly depends on the development roadmap we've defined for the developer and problems we may encounter during this period

Thanks a lot!
Cheers,