First I want it to look for all jobs that are dup-1
=Iif[work type]="dup-1"
Then I want it to run this calculation on the dup-1 records
=Int(Sum([job completed time]-[job start time]-CDate("0:0:" & DatePart("s",[job completed time]-[job start time]))))*24+DatePart("h",Sum([job completed time]-[job start time]-CDate("0:0:" & DatePart("s",[job completed time]-[job start time])))) & Format(Sum([job completed time]-[job start time]-CDate("0:0:" & DatePart("s",[job completed time]-[job start time]))),":nn")