iPhone X iPhone X iPhone upgrade issue adding second iPhone

[Alexrat1996]

my dad joins me to the iPhone upgrade program but how do I add him meaning I’m already on the iPhone upgrade program but how do I add him under his cell phone number so each of us have a loan for each devices ?

He’s new to it.

My At&t account is on the same family line with my dad.

How do add him to the same Citzen account when I preorder mine or does he have to make a separate account ?

 

[Shadowbech]

You just sign up again using his number.

 

[Alexrat1996]

You just sign up again using his number.

My line and upgrade won’t be affected when I add him

 

[Shadowbech]

My line and upgrade won’t be affected when I add him

Your line and your upgrade will not be affected this at all.