Hi @nolo, thanks for this link. I already read it and configured successfully our forum.
I mean… The Animateurs_DataPaper group is already set as Moderator of the Data Paper category as shown in the screensot below, but in the Permissions tab of the group there is the mention :
There are no categories associated with this group.
The Permissions tab only lists category security permissions associated to this group. Go to Edit/Security of any category and limit it to your group and you’ll then see the notice stating: