I am not sure what information are you requesting here. It seems from your statements you already have a division of workgroups and work queues for operators that are using RDA and RPA solution. Are you asking how to assign an operator to one of the workgroup/workqueues created? If so, you can use the Pega-Robot-Register decision tree to assign a workgroup by operator.
An example where a bot with Admin@BankerPro operator id gets registered under Banking workgroup.