Hi @Mehati,
Thanks for posting in the Spotify Community, and welcome!
If you’re the plan manager for the Premium Duo plan, you can change your plan to Premium Family by following these steps:
- Log in to your account page
- Under Your plan, click Change Plan
- Select Premium Family
Your plan will be updated immediately, and your billing schedule will change due to the price difference between the two plans.
At your next payment date (which you can view on your account page), the account of the other member of the old Premium Duo plan will revert to the free plan. You can then invite them (as well as other members of your residence) to the new Premium Family plan by following the steps in this support article.
If you’re a member of the Premium Duo plan (rather than its plan manager), you’ll need to first leave the plan before starting or joining a Premium Family plan. As a member, you can leave the Premium Duo plan by following these steps:
- Log in to your account page
- Under Your plan, click Change Plan
- Scroll to Spotify Free and click Cancel Premium
- Continue through to the confirmation message.
Your account will immediately switch to the free plan, and you can then either start your own Premium Family plan here, or join a Premium Family plan after its plan manager sends you an invite (they can follow these steps to invite you to the plan).
Bear in mind that Spotify users must reside at the same address as the Premium Family plan manager in order to accept the invites to the plan. Note as well that members can only switch between different Premium Family and Premium Duo plans once a year.
You can also read more about how the Premium Family plan works in this support article as well as in this FAQ article.
Let me know if you have any other questions, and have a good day!