Question about Child/Parent Categories Assignment

you use flexicontent for multi cat function
simply use assign tab to select every wanted categorie
but the best way is to use relation field to link article (try it to understand more)
ex : artist and album
=> 1 type artiste => 1 article by artiste
=> album => X article album linked to 1 artiste
that more powerfull

Yes this is what I am searching for.
How I actually do it?

please i can't a do tuto for whole question => read tuto and faq ! please

Sorry u r right, please feel free to erase my last messages.