Resource Workload shows the ratio of work that has been assigned to team members for the sprint.
The workload gadgets shows the availability of each team members where:
1. No Coloured Bar: Total Availability of a team member within a Sprint.
2. Green Bar: Completed Work by a team member (in Hours).
3. Yellow Bar: Assigned Work by a team member (in Hours).
4. Red Bar: Overloaded Work (in Hours). It shows that work assigned to a team member is more than its availability.