Count assignees who were resolving issues
Is it possible to calculate how many unique assignees (or reporters) have been assigned to resolved issues eg. each month on a monthly chart? On a chart with time dimmension in rows and issues resolved/open issues in columns i'd like to add a number of assignees who were resolving issues that time, related to each column, to monitor dependency between growth of open issues and number of people involved in resolving them.
Something like this:
thansk in advance!
Chris