List Workspace Named Users in detail

The Named Users entry for workspace lists a number of presumably unique users, assigned to the resources. Can we have means to show details from within Nerdio - either by an export of all unique user assignments, or all assigned users , assignments, and their assignment type (group, direct)?
The Workspace Usage export shows only the change of Named users in time, and the ability to justify this number from within Nerdio is essential.