With PCI Proxy you have one single company account (legal entity) and one single login. Independently of your active subscription plan and test or productive environment.
This company account is called Contract and can hold, based on your subscription plan, one to several sub-accounts (Projects). Each Contract must contain at least one legally authorized user. Furthermore the invoice is always issued at Contract level.
User can be assigned either on Contract or Project level. Please refer to User management guide below to learn more about the roles and permissions.