Attached image. Rogério Mauri
You need a permission key to set a restriction to it. So, create a Permission, then go to your user and set the permission to him/her. Afterwards, you can use the "Ação Padrão" to say either "Atribuir" or "Somente Leitura", and then set the "Restrição", which you should also have created before, as the permission.
Solved.
I was not understanding the relation between Permission and Restriction. Now I understood.
TKS !!! Rogério Mauri
Bom fim de semana.
Obrigado. Rogério Mauri