Please fill all the fields in the default Accounts' profile (contacts, etc.). This is necessary for successful domains registration since the information from an Account profile is being transferred to a Registrar if you, for example, decide to register a domain for one of your own accounts.
Note: Editing the Account profile and contacts does not mean creation of new Parallels Business Automation - Standard Users. In other words, it does not affect login credentials.
To edit the Provider Account contacts, click the topmost item in the Navigation tree (in the left pane) and select the Company Profile tab and then click the Contacts tab.