Hi each alias can be assigned to only one device, however you can set up your presets or translators to send to multiple aliases (devices).
For more information about device selection, see this tutorial.
You can learn more about aliases from this tutorial.
Now if you have Unlimited Named MIDI ports, then you can use advanced routing techniques to have multiple devices merge into one named MIDI port and then in Bome MIDI Translator Pro create an alias for the newly created merged virtual device.
This posting discusses routing techniques with Bome Network.
Steve Caldwell
Bome Customer Care
Also available for paid consulting services: bome@sniz.biz