An account holder can change the level of authority from a Basic User to Account Administrator or from Account Administrator to a Basic User.
All Account Moderator's must be over 18 years old and can:
Add new services
Transfer ownership of services
Update/change contact details including phone numbers
Disconnect a service
Relocate services to another address
Replace a missing/lost SIM
Modify the monthly plan
Add and remove other administartor users
Raise faults and complaints
A Basic user is for mainly used for email purpose only. They can't make any changes to the account.
To change the between User types:
Login to My Account
Scroll down to My Account details, then User and Mailboxes
Choose the Username and click Modify
Scroll down to account type, then choose either Administrator or Basic, then click Submit.