Details
User registration
A new user account can be created in SSMS Admin Web UI:
- 
Press 'Add User'  
- 
Enter not used userId  
- 
Wait for blue success message  
Note: For additional details see SSMS documentation.
User account activation
- Create activation code in SSMS
 1.1. Select user and press 'Add Activation No.' 
1.2. Press 'Add'

1.3. Remind the created activation code number shown in blue success message

Note: For additional details see SSMS documentation.
- Add your user account in your app
 2.1. Enter userId, activation code and optional tenantId The following example shows GettingStartedApp: 
2.2. User is asked to define a password
User account login
- User has to log in with userId and password