If you have set up a new Author in Joomla and find that they are not able to log into the Joomla Admin console. There there Permissions settings might not be set up right. Follow these steps to find the User permission settings:
- Log into joomla
- Go to Global Configuration
- Click on permission settings
- For this particular case, to enable the Author to log into the Administrator back end, click on Author and ensure that Admin login is set to allowed.
Once here you should now be able to change user settings when required. All other permissions