I use groupjive. When i want to create a group, the group owner is displayed at the bottom of the form.
Can i hide it ?
You only see that because you've CB Moderator permissions. It allows moderators to create groups on other users behalf. Regular users will not see that. There is not an option to hide it from moderators.
When i visit the profile of a relation, I can create a group from my contact profil. Can I block this behavior ?
You want to remove the button from the Groups tab on their profile? There isn't any specific setting to hide that. Do you mean you don't want regular users to be able to create groups? or just don't want them creating groups from profile?