Refer, #GUID-A7D96D51-144E-491D-AB61-41D5F8FB5FB1 for configuring polling and thresholds.
For Velocloud the polling group is called "Orchestrator Polling Groups". There is only one setting object called "VCO Polling". Currently only AnalysisMode and PollingInterval parameters are supported. The retries and timeout, though enabled, are not used.