Together is one subscription that can cover up to five groups you belong to. You can cover your family group, your friends, and other groups you have joined without buying a separate subscription for each one.
Each covered group gets the paid features, room for 250 people and 50 GB of its own storage. The people in those groups do not each need to subscribe. You do not have to own a group to cover it, but you must belong to it and be eligible to pay as an adult.
Your groups stay separate and private. Paying for them does not merge their photos, conversations or people, and it does not make you a group owner.
Buy Together in You → Plans & billing, then choose the groups you want to cover on the same screen. You can leave slots empty and fill them later at no extra cost. A group already covered by another subscription cannot be covered twice.
Choose your covered groups or learn when you can move coverage.