Calibre Auto-add system - can it do subfolders now?

[yelt]

I have been getting my system ready to server an ebook library automatically, and I noticed this post:
https://www.mobileread.com/forums/sh...6&postcount=19

If you wish to add books from sub-folders in bulk, simply right click the add books button and choose add from sub-folders. Automatic adding is never going to support sub-folders.

I was wondering if this has changed?

If not, I can continue to add manually, but, then the problem of adding duplicates exist, and after looking through Calibre, I am not sure how to manage the duplicates issue.

Is there a guide on how to continually (manually) add books without creating duplicates?

[kovidgoyal]

manual adding and automatic adding can both be configured to handle duplicates automatically. And no automatic adding will never support sub folders.

[Kemstex]

I have preferences set to auto add from a directory. I may have not done this correctly because Calibre is not adding automatically. I can, of course, go into Add Books and do so individually and have been doing that. Additionally I used to be able to add multiple books from my "auto add" directory but when I try to do so it only selects the first book and stops. Any ideas of where I may have gone wrong?

Thanks,
Kem