How to activate subuser account?
After the account is created by the administrator, a message is sent to the e-mail address provided during registration for the newly registered user, allowing for the activation of the account with the subject "Registration in the Id Issuer system" and its body:

Find this message in your mailbox and activate the activation link with the "Activate account" button.
On the linked page (shown below) enter your password twice in the appropriate fields.

According to the description, the password must be at least 8 characters long and contain at least one character from each of the following sets: digits (0-9), lower case letters (a-z), upper case letters (A-Z), special characters (;,!).
When the password is confirmed, press the "SAVE" button. If the password has been entered correctly, you are logged into the ID ISSUER system by the newly created account.
The ID ISSUER system's main panel is displayed on the screen.
From this point on, you can log in to the ID ISSUER system with your e-mail address and a newly created password.
On this account are set the authorizations selected during registration, which cannot be changed by the logged in user.
These rights can only be modified by the higher-level user (who is in this case the administrator of the users) who created the subuser account.