A resource group is a grouping of resources for queue assignment purposes.
The resource group determines the sequence of allowed queues for its corresponding resources, which can influence which WOs are selected for a resource. For more information, see Warehouse Order Selection.
You assign/unassign a resource group to/from a queue using the queue sequence for resource group transaction, accessed on the SAP Easy Access screen (Extended Warehouse Management ® Master Data ® Resource Management ® /SCWM/QSEQ - Maintain Queue Sequence for Resource Group), or from the warehouse management monitor (Assign Queue/Unassign Queue methods).