New group creation (private)
When creating a group, the user only have access to a few group parameter before to hit "create my group":
User then have to go to "group parameters" and complete the group setup, including the setup about group visibility: Therefore it is not possible to create a private group from the start. It has to be created as a public group and then changed to private.
I would love all the group setup to be on the create group page.