For large organisations or any company with a split of areas and use cases (applications used, connection method, VIP, etc.), for the hundreds of users we can have at one time it would be really useful to group hosts and users together so one areas stats don't skew another areas. Without this option we could easily lose context and meaning to 'Average' and 'Total' information across UberAgent.
I don't have an actual idea and UI in mind for achieving it but hopefully the idea makes enough sense to explore or like previous requests, it's already in the pipeline/done! :)