Hi@akshaybhujbale
Which version of AEM are you using?
If it is prior to AEM 6.5. Use below OSGi component (and associated service)
com.day.cq.auth.impl.CugSupportImpl (This has been deprecated in AEM 6.5)
For AEM 6.5
Check Apache Jackrabbit Oak CUG Exclude List (OSGi componnet uses below service,
org.apache.jackrabbit.oak.spi.security.authorization.cug.CugExclude
Reference:
Custom User Group Mapping in AEM 6.5 | Adobe Experience Manager
Hope this helps.
Thanks