With the shared plan, you get Raz-Kids (Learning A-Z) classroom license access for 1 year via an official invitation sent to your email. The invitation is delivered after your slot is active and the group is ready, so make sure the email you register is one you can access, and check your spam folder if it does not appear in your primary inbox.
Sharing rules: do not change the password or email of the shared account, and do not force-logout other devices, since other members in the group plan are also accessing the same leveled library. For the 1-user (private) package currently available, these rules do not apply because you are the sole user of that slot.
Group packages with up to 3 people per classroom will be released soon. Right now only the 1-user package with invitation to your own email is open, so there is no need to wait for the group to fill, and activation can be processed immediately after your QRIS payment is received.