Time to resolve Service Request. Mon- Friday business days and 9 to 6 Working hrs
I just wanted to post the formula that worked for me just in case if anyone has a similar request
(TIMESTAMPDIFF(SQL_TSI_HOUR, "Service Request"."Opened Date and Time", "Service Request"."Closed Date and Time")) - (TIMESTAMPDIFF(SQL_TSI_DAY, "Service Request"."Opened Date and Time", "Service Request"."Closed Date and Time") * 15) -(( WEEK_OF_YEAR("Service Request"."Closed Date and Time") - WEEK_OF_YEAR("Service Request"."Opened Date and Time")) * 18)