In order to be able to create a new user, the password for the user "admin" must first be changed.
1. Click Remote Setting .
2. Navigate to System and then to Multi-User.
3. Click on the corresponding user e.g. User1.
4. Activate the options Active and Password. Then assign a password for the user.
5. Appropriate authorizations can be assigned to the user as required.
6. Click Save to save your settings.
7. Enter your admin password again.