It's a curious one this. If they're not allowed to create them, they shouldn't be able to configure the notification as we shouldn't bloat up their settings UI - except maybe if people keep sending them them, they'd want to. I think the best compromise is to make it send using default settings and just acknowledge this can never be perfect; I don't want to make some config option to control the behaviour. So that's what I've done. The default settings is A__STATISTICAL, i.e. they'll get a notification using the average of what they've set for other ones (or in your case, your lock-down setting).