Send messages to specific sessions on shared hosts

Hello,

We have users that do work using a virtual desktop that is hosted in Azure. When we support these agents, if we want to send a message to them, we would need to connect to their session first (otherwise the message gets sent to the console session, which is frequently not logged in and always not who we're wanting to contact). I was hoping that messages could be directed to a specific session so that we can communicate with agents before joining their session.

Thank you!