In this screen you can see the Customers list. The list can be sorted by any of the fields. If Marvin Miller was a new account that had entered a tax number you would see a red light under the RA field. RA is an acronym for 'Requires Approval'. If you get a lot of new account requests that use tax numbers (wholesale accounts) then it will be easier to sort this screen by the RA field so that you can more easily perform approvals.
At the bottom of the list is a box that shows how many of your customers belong to each group.