Hi torquyme,

Yes sure, Lightstreamer provides a publish and subscribe (pub-sub) paradigm, to decouple message producers from message consumers.
So each client can subscribe to a subset of the Items supported by your Data Adapters. Furthermore by leveraging Metadata Adapters you can control server-side which Items each client is entitled to subscribe to.
In your specific case you can use two different Items one for each set of client.

Please take a look at section 2.2 of our "General Concepts" documentation and let us know if you need any further clarifications.

Regards,
Giuseppe