Frontend User Group 

The FrontendUserGroup trigger is used to show the indicators in the TYPO3 Frontend for specific frontend user groups.

ext_localconf.php 
\KonradMichalik\Typo3EnvironmentIndicator\Configuration\Handler::addIndicator(
    triggers: [
        new \KonradMichalik\Typo3EnvironmentIndicator\Configuration\Trigger\FrontendUserGroup(1,2)
    ],
    indicators: [
        new \KonradMichalik\Typo3EnvironmentIndicator\Configuration\Indicator\Backend\Topbar([
            'color' => '#00ACC1',
        ]),
    ]
);
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The configuration supports multiple group IDs as separate arguments. The trigger passes if the current frontend user is a member of any of the specified groups (OR logic). If no frontend user session is available, the trigger returns false.