Permissions
Acting as
Roles are enforced in the data layer, not by hiding buttons. Pick Viewer and every control that writes goes dead with a reason attached.
Owner
Usage alerts
When a customer counts as approaching its limit
This one setting drives the warning state everywhere: the tiles on Overview, the pills on Customers, and the dotted marker on every meter bar.
Billing
How invoices behave
Configuration only. Nothing on this screen describes a result or a rate of collection.