There is already the ability to define whether a user can create accounts / contacts and add subscriptions, however by default this user can also cancel bill runs and cancel and delete draft invoices. It would be beneficial to lock down the access to Bill runs and other functionality. There are most likely other functions a user with basic Z-Billing permissions can access as well.
Provide the ability for a user to upload usage files without accessing other key billing areas such as bill runs and invoices.
Rationale for this: the ability to create a user that can create accounts / contacts and assign subscriptions, but does not have access to other critical billing area functions. The ability for the Ops team members to add usage files reported out of production systems without affecting
