Workload group throttles limit the number of requests that a group of workloads can run concurrently. To qualify for a workload group throttle, a workload must already have an individual throttle and must be active in at least one state. Before a request affected by a workload group throttle can run, it must satisfy both the workload throttle and the workload group throttle limits. A workload can belong to only one workload group throttle.
You can also use system throttles to enforce concurrency limits. Group throttles offer more flexibility in certain cases. Teradata expects that a just a few workloads per customer site will need to be grouped.