The n8n Cloud Starter group plan uses an official invitation sent straight to your email once the group is filled. You get a workspace with 2.5K executions per month and unlimited users inside your private slot.
Maximum three people per group, each holding their own invitation tied to their email so credentials stay personal. Do not change the primary email or sign out from devices that other members rely on, since that affects shared access.
Right now only the single-user private plan is open while the group plan is coming soon. If the group is not full yet, your order will wait until seats are filled before the invitation goes out.