Here's a quick and dirty how to make Visca over IP work on a Sony XRG series camera.
The plugin i'm using to test with OBS is PTZ Controls v0.15.4
Install that for your OBS
Then launch it.
Click on the GEAR icon in the lower left corner
Click on the + icon in the lower left corner and select "VISCA (UDP)"
In the IP address enter in the IP of your camera and then enter 52381 (default Sony port) as the port. Click APPLY
Go back to the PTZ control and you should now be able to use the arrows to move your camera.
Go back to the PTZ control and you should now be able to use the arrows to move your camera.