Thank you Rene for your support.
Sorry for the wrong category of the post, but the question is generic for schematic, footprints, 3dModels.
I need to understant if my use of KiCad is correct or if there is a better way.
For a new development:
I install KiCad, remove the default integrated libraries, maps Git libraries of simbols, footprints and 3dModels.
In this case I can mantain updated the libraries wit Git.
For missing part in the Git libraries, they are not present, so I have to implement it, right?