For Application Server:
X:\program files (x86)\Symantec\CCS\Reporting and Analytics\Application Server
AppserverService.exe.config,
For CCS Manager:
X:\program files (x86)\Symantec\CCS\Reporting and Analytics\DPS
Symantec.CSM.DPS.exe.config
For Directory Server Support
X:\program files (x86)\Symantec\CCS\Reporting and Analytics\Directory Support Service
Symantec.CSM.DSS.Service.exe.config
These are all XML files so you will need to look into the text and find where the log levels are set to change how the logs are performing. Most logs can be found here for Windows Server 2008+:
C:\ProgramData\Symantec.CSM\Logs\[folder of service/task]
When you change the log levels the change will be immediate and you will not need to stop/start the given service.
Hope this helps.