If you want him to be an authorized person, then you need to talk to a rep and add his name as an authorized person.

But most things can be done through online. If you give him the email address and password to log in, then he can check usage/info  and/or do most things. 

Example is like...my husband is the account owner, but I login and check everything.

Thank you.  I did that, but figured if he needed to call for any reason he'd be set up.

Other thing is that the authorized person can't pick up a phone at a store without your( account ownews) note.   The account owner need to talk to a rep and they can make a note on your account said the authorized person will come to a store to purchase a phone.