Darktable 3.6.0.1

I’m a newbie to Darkroom and more used to Lightroom.

I want to add a mainfolder with many subfolders, but it doesn’t see the mainfolder as something i can add, what’s wrong here?

exampel: Photos/subfolder/subfolder/…

https://darktable-org.github.io/dtdocs/module-reference/utility-modules/lighttable/import/#import-dialog