With the Koofr Briefcase S 10 GB annual group buy, you get access to a shared account used by up to 3 people. The total annual fee is split equally across all slots, so the per-person price is much cheaper than subscribing alone. Once the group is full, the JoinBareng admin activates the account and sends the login credentials to you via WhatsApp.
A shared account means you log in with the same email and password as other members. To keep things smooth for everyone, do not change the password, do not change the account email, and do not log out other members' devices. Avoid storing highly sensitive personal files in a shared account since other members have access to the same folders. The Koofr group buy is currently offered as a 1-user (private) package, with the group package coming soon.
If you join while the group is not yet full, you still pay for your slot and wait until the quota is reached before the account is activated and credentials are sent. Once the group is full, activation happens and the notification is delivered via WhatsApp. Group packages with more than 1 slot will be opened once this flow is stable.