====== monmodule.permissions.yml ======

<code>
/var
    /www
        /drupal
            /modules
                /custom
                    /monmodule
                        monmodule.permissions.yml
</code>

<code yaml>
permission_1:
  title: "Description de la permission 1"
permission_2:
  title: "Description de la permission 2"
</code>