HBO Max | With the Extra Member Add-On, you can share your HBO Max …

Choose Get Add-Ons. This option is only available if your base subscription is billed through WarnerMedia. You’ll be billed each month until you remove the add-on or cancel your base plan. If you purchased your plan and the Extra Member Add-On on different days, they will be billed separately. You must know the email address of the person you want to share HBO Max with. Extra members need to …

https://help.hbomax.com/us-en/Answer/Detail/000002598