In an interactive billing environment, activity stays in the "Unbilled" section until it is assigned to a project by a user via the Desktop Billing Client. Follow these steps to see the records not yet billed by users.
Open Argos Manager and navigate to the "Data” tab on the left side
Select the "Unbilled" tab on the upper bar of the "Data" section
Click the “Reset” button in the filter pane on the lower right side
Select a date range in the upper right
Click "Apply" in the lower right
The data you see in the grid will reflect all activity for your selected date range that has not yet been allocated to a project.