Creating and configuring TYPO3 backend users
Each person that uses the TYPO3 backend should have their own personal backend user account.
The user that was automatically created for you during Installation has the widest rights possible and is a System Maintainer. The System Maintainer is an Administrator who can also see and use the section Admin Tools in the backend.
Tip
If your Backend User account does not seem to work for some reason, check chapter Troubleshooting common TYPO3 backend login problems.
Administrators
Create personal administrator accounts and mange them. Grant System Maintainer permissions to administrators.