What are the master account, family members and shared account of the Xiaomi Body Composition Scale S400 respectively?

The detailed information regarding these accounts is as below:
1. Master account: The first user to bind the device is the master account. The master account supports all functions of the scale (binding, deleting devices, managing family members, device sharing, firmware update, modifying units, etc.);
2. Shared account: The master account can share the device with up to 5 shared accounts;
3. Family members: sub-accounts created under the master or shared accounts, also support all body composition measurements.
Note:
1. Six accounts can be bound to use the scale together, and 30 family accounts can be created;
2. The master and shared accounts can only be the accounts with an age of 14 and above, while the family accounts have no limit.