Sum of time Spent

Hi,

I have Analyst Name which spent time on ticket. In my example I have kevin whom ticket is transfer 2 times. So I need to get Analyst Name as unique. if analyst name is repeating 2 or 3 or n times then the report will merge all the time spent and show only single record with total time spent by analyst.

Attach is the screenshot. Do let me know how to achieve this

Thanks,

Mohit