How to add Group filter to Query Report

How to add Group filter to Query Report

I found a useful query report in the Frequently Asked Reports section - specifically "Count of Requests Created Based On Hour Range".  I'd like to narrow the results to ONLY show the requests in the Service Desk group.  Can someone advise?  Here is the query that is provided:
select DATENAME(mm,dateadd(s,datediff(s,GETUTCDATE() ,getdate()) + (wo.CREATEDTIME/1000),'1970-01-01 00:00:00')) 'Month',sum(CASE WHEN DATEPART(hh,dateadd(s,datediff(s,GETUTCDATE() ,getdate()) + (wo.CREATEDTIME/1000),'1970-01-01 00:00:00'))>0 AND  DATEPART(hh,dateadd(s,datediff(s,GETUTCDATE() ,getdate()) + (wo.CREATEDTIME/1000),'1970-01-01 00:00:00')) <= 3 THEN 1 ELSE 0 END) '0:00 to 3:00 hrs',sum(CASE WHEN DATEPART(hh,dateadd(s,datediff(s,GETUTCDATE() ,getdate()) + (wo.CREATEDTIME/1000),'1970-01-01 00:00:00'))>3 AND  DATEPART(hh,dateadd(s,datediff(s,GETUTCDATE() ,getdate()) + (wo.CREATEDTIME/1000),'1970-01-01 00:00:00')) <= 6 THEN 1 ELSE 0 END) '3:00 to 6:00 hrs',sum(CASE WHEN DATEPART(hh,dateadd(s,datediff(s,GETUTCDATE() ,getdate()) + (wo.CREATEDTIME/1000),'1970-01-01 00:00:00'))>6 AND  DATEPART(hh,dateadd(s,datediff(s,GETUTCDATE() ,getdate()) + (wo.CREATEDTIME/1000),'1970-01-01 00:00:00')) <= 9 THEN 1 ELSE 0 END) '6:00 to 9:00 hrs',sum(CASE WHEN DATEPART(hh,dateadd(s,datediff(s,GETUTCDATE() ,getdate()) + (wo.CREATEDTIME/1000),'1970-01-01 00:00:00'))>9 AND  DATEPART(hh,dateadd(s,datediff(s,GETUTCDATE() ,getdate()) + (wo.CREATEDTIME/1000),'1970-01-01 00:00:00')) <= 12 THEN 1 ELSE 0 END) '9:00 to 12:00 hrs',sum(CASE WHEN DATEPART(hh,dateadd(s,datediff(s,GETUTCDATE() ,getdate()) + (wo.CREATEDTIME/1000),'1970-01-01 00:00:00'))>12 AND  DATEPART(hh,dateadd(s,datediff(s,GETUTCDATE() ,getdate()) + (wo.CREATEDTIME/1000),'1970-01-01 00:00:00')) <= 15 THEN 1 ELSE 0 END) '12:00 to 15:00 hrs',sum(CASE WHEN DATEPART(hh,dateadd(s,datediff(s,GETUTCDATE() ,getdate()) + (wo.CREATEDTIME/1000),'1970-01-01 00:00:00'))>15 AND  DATEPART(hh,dateadd(s,datediff(s,GETUTCDATE() ,getdate()) + (wo.CREATEDTIME/1000),'1970-01-01 00:00:00')) <= 18 THEN 1 ELSE 0 END) '15:00 to 18:00 hrs',sum(CASE WHEN DATEPART(hh,dateadd(s,datediff(s,GETUTCDATE() ,getdate()) + (wo.CREATEDTIME/1000),'1970-01-01 00:00:00'))>18 AND  DATEPART(hh,dateadd(s,datediff(s,GETUTCDATE() ,getdate()) + (wo.CREATEDTIME/1000),'1970-01-01 00:00:00')) <= 21 THEN 1 ELSE 0 END) '18:00 to 21:00 hrs',sum(CASE WHEN DATEPART(hh,dateadd(s,datediff(s,GETUTCDATE() ,getdate()) + (wo.CREATEDTIME/1000),'1970-01-01 00:00:00'))>21 AND  DATEPART(hh,dateadd(s,datediff(s,GETUTCDATE() ,getdate()) + (wo.CREATEDTIME/1000),'1970-01-01 00:00:00')) <= 24 THEN 1 ELSE 0 END) '21:00 to 24:00 hrs' from workorder wo group by DATENAME(mm,dateadd(s,datediff(s,GETUTCDATE() ,getdate()) + (wo.CREATEDTIME/1000),'1970-01-01 00:00:00')) 

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