With the Migaku shared plan on JoinBareng, you get a monthly slot with shared account login access. The cost is calculated per slot and visible on the package card before you pay via QRIS. Once your payment is received, you will receive the shared account email and password used by other group members. This shared account is used on a rotating basis per slot, so all vocabulary progress and SRS decks are stored in the same account.
Things to keep in mind when using a shared account: do not change the password or email of the Migaku account as it will disrupt other members who are actively studying. Likewise, do not log out other members' devices mid-session since the account is shared. If there are any changes from Migaku's side, such as SRS feature updates, the admin will inform the shared plan group via WhatsApp. By following these rules, all group members can study comfortably at a fraction of the individual subscription cost.
For the Monthly plan, slots are given immediately once your QRIS payment is confirmed since this plan is sold per individual slot. Later, when the group plan is officially launched, the process will be slightly different: you pay, then wait for the Monthly or Annual group to fill up before the admin activates and provides access to keep shared accommodation comfortable. Until the group plan is officially released, the 1-user private plan is the shared option currently available.