Typically a scanning user will belong to the fd-scan group and will have a scanning tab.
Perhaps you want a user to be an occasional scanning user though. The best way to do this is to create an icon on their desktop that elevates their rights to allow them to scan.
You do this by adding “/ scanstation” to the WinClient icon.
C:\Program Files\Spielberg Solutions GmbH\FileDirector WinClient\ FileDirector WinClient.exe /Scanstation
This will elevate your rights for the purpose of scanning. You will have to have security rights to the scan profile though.