How to measure average days/workdays from transition status A to transition status B

Thanks very much Martins.

I’m having difficulties creating calculation for sum of “original estimate” hours for all resolved issues, distributed in month and engineers/groups. I have figured out the calculations of engineers and month, and the total resolved issue numbers, but could not add up the total estimate hours for them in correct number.

Could you help have a look at my post below? Very much appreciated!

Leon Kan Li