The VM3 manual tells you to go to Control Panel, Enterprise Settings, Data Collection to set this up, but there is no Enterprise Settings (formerly Intermec Settings) to select in the control panel.
To access Enterprise Settings, start File Manager and navigate to \Program Files(x86)\Intermec\IVA\bin and right click on the “Intermec Settings” program. Add a shortcut to your desktop and you’ll have access to the features described in the manual.
Note: Select ASCII as the scanner type for a serial scanner and match the baud rate, parity, data bits, and stop bits and you’ll be good to go. If not, make sure the Virtual Wedge is enabled; it’s the last choice in the main menu.