If you need to manage accounts for multiple companies or phone systems, and need to keep user access and information separate, you should create more than one Organization.
Using multiple Organizations allows you to separate:
User Management: Each Organization has a separate list of users who are authorized to access the account and make changes.
Billing: Organizations also have their own billing preferences, with separate invoices and billing methods.
Call Records: Call Data Records are kept separate for each Organization, so you can keep this data private between them.
See Also: What is an Organization?
Keywords: Separate Billing, Separate Payment Methods, Portal Management, User Access Management, Administrative Access