The Manhattan Prep group buy currently available is GRE On Demand with 1-month access, using credential sharing, where one account is shared among several group members. At the moment, only the 1-user (private) plan is open, meaning one account is used by a single member. The group plan with a maximum of 2 people per group is being prepared and will open soon.
How it works is simple: pick the plan, pay via QRIS according to the amount shown on the package card, and the admin will process it. After payment is received, you will receive login credentials that can be used to access GRE On Demand materials for the specified period.
Important rules to follow: since this is a shared account, do not change the registered password or email, and do not log out other devices so other members do not lose access. Violating these rules may result in access being revoked by the admin for the benefit of all. When the group plan opens, new members will wait until the group is full before activation.