Sometime at project creation we do not choose some options and later we want to use them. I read it's possible if we edit the .yo-rc.json file and re-execute jhipster as explained here.
That is why I ask this question : Is there a reference documentation on which I can relate so I can feel I know what I'm doing ?
Right now I use to create another project with the option I want to add and the pick in the generated file.