Hi @Jerry, welcome to the Community!
Only the account holder will appear on your bill and it is not possible for there to be two holders of an account. If you wish, you're able to set up an authorised contact on your account by logging in to AGL Energy Online, selecting ”My Account Details" and then “Manage account authorised persons” on the left-hand side.
Authorised persons will be able to make changes to an account but will not be able to connect you to a new address or accept a new plan on your behalf. Let me know if you have any more questions on this.
Thanks for your post!
Is there anything that we can help you with at the moment?