Using hh:mm:ss format on Power BI charts

Thanks for the info.  So do I just create a new measure using this code? This seems like it wouldnt work based on the calculation I am using in my measure. I am still learning dax, so excuse any dumb questions. 

*AvgSpeedOfAnswer = TIME(0,0,CALCULATE(SUM('Interactions'[QueueTime_s]),filter('Queues','Queues'[IsInbound]=1),FILTER('Interactions','Interactions'[IsAnswered]=1))/SUM('Interactions'[IsAnswered]))

Chelsie Eiden's Duration = 
// Duration formatting 
// * @konstatinos 1/25/2016
// * Given a number of seconds, returns a format of "hh:mm:ss"
//
// We start with a duration in number of seconds
VAR Duration = SUM([Duration])
// There are 3,600 seconds in an hour
VAR Hours = INT ( Duration / 3600)
// There are 60 seconds in a minute
VAR Minutes = INT ( MOD( Duration - ( Hours * 3600 ),3600 ) / 60)
// Remaining seconds are the remainder of the seconds divided by 60 after subtracting out the hours 
VAR Seconds = ROUNDUP(MOD ( MOD( Duration - ( Hours * 3600 ),3600 ), 60 ),0) // We round up here to get a whole number
RETURN
// We put the hours, minutes and seconds into the proper "place"
Hours * 10000 + Minutes * 100 + Seconds