EventSentry can monitor up to 30 custom event logs. From the Custom Event Logs dialog in filter details, select your custom event logs to monitor:
Monitoring custom event logs is no different than monitoring the default event logs
except that you have to choose the names of the custom event logs. After you have selected the appropriate custom event logs (on a global basis) you can then configure EventSentry to monitor one or more of these custom logs on a per filter basis.