Alert Policies description - discrepancies between documentation and dashboard.

I have a case running with Product Support at the moment. As far as I can tell, the Alert Policy infrastructure is changing, as we have had inconsistent results since August. Functionality is also dependent on the exact products and plans applicable for your tenancy. That would not be a problem if the interface did not show active controls for (possibly) inactive features. The jury is also out on whether the administrator's exact role and rights are a factor. According to the RBAC link in the article you cited, the obvious roles should do the job but I am not so sure where the notification subsystem is concerned.

We have the HVE policy in our alert table, marked as a system threat management policy. I would say the omission is simply a case of the documentation not being up to date due to rapid change.