Dear Sebastian, thank you for your precious help. But I must say that it seems complicated. The setting module should be simplified, in the sense that it would be enough for the admin could enable or disable all the available buttons . I say this because I use DNN for education at all levels and when you have to interact with students from five, six or more years, it's hard to find the right settings for them. In this regard it would be interesting to develop specific modules for education from kindergarten to university.
However, for now I have found a good compromise for a forum dedicated to children born prematurely.
Thanks again
Marcello Avento