We are looking to get better visibility into the work assigned to each Scrum team member during a sprint by having members estimate sub-tasks. I thought the "Workload by assignee" would provide this roll-up based on who was assigned to the sub-task; however, it appears to roll-up based on who owns the issue. Since multiple people work on a single issue this does not accurately reflect the workload at the individual Scrum team member level.
Is there a way to view the sprint workload by the sub-task assignee?