Net Work Duration (Working Hours)

So, if the time is outside of the work hours, how would you want the work hours to be calculated, do you want it to ignore any non work hour time?

If this works for you, I will update the Quick Measure:

mNetWorkDuration = 
// Get the start and end dates
VAR __dateStart = MAX([Date_Start])
VAR __dateEnd = MAX([Date_End])
// Calculate the Net Work Days between the start and end dates
VAR __NetWorkDays = COUNTX(FILTER(ADDCOLUMNS(CALENDAR(__dateStart,__dateEnd),"WeekDay",WEEKDAY([Date],2)),[WeekDay]<6),[Date])
// Set this to the start of the work day (7:30 AM)
VAR __startTime = TIME(7,30,0)
// Set this variable to the end of the work day (6:00 PM)
VAR __endTime = TIME(18,0,0)
// Calculate the duration of a full day, in this case in minutes
VAR __fullDayMinutes = DATEDIFF(__startTime,__endTime,MINUTE)
// Calculate teh number of full days, this accounts for the possibility that tickets start and end on the same day
VAR __fullDays = IF(__NetWorkDays < 2,0,__NetWorkDays-2)
// Calculate the total duration of all full days.
VAR __fullDaysDuration = __fullDays * __fullDayMinutes 
// Calculate the start time of the current record
VAR __startDayTime = TIME(HOUR(__dateStart),MINUTE(__dateStart),SECOND(__dateStart))
VAR __startDayTime1 = SWITCH(
                            TRUE(),
                            __startDayTime>__endTime,__endTime,
                            __startDayTime<__startTime && __startDayTime>TIME(0,0,0),__startTime,
                            __startDayTime
                        )
// Caclulate the duration of time for the first day
VAR __startDayDuration = DATEDIFF(__startDayTime1,__endTime,MINUTE)
// Calculate the end time of the current record
VAR __endDayTime = TIME(HOUR(__dateEnd),MINUTE(__dateEnd),SECOND(__dateEnd))
VAR __endDayTime1 = SWITCH(
                            TRUE(),
                            __endDayTime>__endTime,__endTime,
                            __startDayTime<__startTime && __startDayTime>TIME(0,0,0),__startTime,
                            __endDayTime
                        )
// Calculate the duration of time for the last day
VAR __endDayDuration = DATEDIFF(__startTime,__endDayTime1,MINUTE)
// The total duration is the duration of all full days plus the durations of time for the first and last days
RETURN  
IF(__NetWorkDays=1,DATEDIFF(__dateStart,__dateEnd,MINUTE),__fullDaysDuration + __startDayDuration + __endDayDuration)