Can I Add Another Joystick To An XVR To Control Four PTZ Cameras?

So one console session directly on the xvr with two joysticks each controlling one of two cameras simultaneously?

It doesn’t seem likely, as the console app only has one target for ptz commands at a time.  You might be able to use two joysticks at the same time, but I think they would control the same camera at any given moment.  Just like if you connect two mice.

If you can run a PC client nearby, you could connect a different joystick there, perhaps running in the background.

Of course you could buy a couple of these type devices, though they’re not cheap:

The joystick shown can log directly into a PTZ if it’s on the same network as the cameras.