1. Start aem in debug mode :
java -jar -jarname -agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=3000
2. Query Builder Interface URL :
http://localhost:4502/libs/cq/search/content/querydebug.html
3. Create User, Group or System User :
http://localhost:4502/crx/explorer
4. Manage user or group permissions :
AEM Junction 