Click the Avio Services icon 
and select Functional groups. In the following dialog enable this group by clicking on MIDI following which it is then listed in yellow at the top. Finish by clicking Apply Changes.
Click the Avio Services icon again and select Configure MIDI Drivers... (enabled)
Under Available Drivers click Add File and select the appropriate driver in the file dialog.
After adding the driver highlight it in list Available Drivers and click Install
to install the driver.
In field Installed Drivers highlight the corresponding driver, after which the options for configuration will appear on the right. Select the required Input- and Output Ports.
After configuration has been completed click Save.
Now start the Avio Manager. The MIDI device can be found at the Avio Service of the corresponding computer. Link up the channels as required. See Wings Avio Manager - An overview.