Hello Nick,

you have to send SubscribePresence for every user that should be monitored.

Keep in mind, the PbxApi is user centric API. If you use it from a WebSocket connection from App Object to your App Service, the subscriptions are set up in the name of the App Object.

If you want to use some specific User for monitoring other Users, you have to set up a dedicated API by using the PbxImpersonation API https://sdk.innovaphone.com/14r1/doc/appwebsocket/PbxImpersonation.htm.

Best Regards

Andreas Fink