When you have purchased a Neets Touch Panel and you have uploaded the graphical interface into the control system, then it is time to setup the Touch Panel.
In this video you can see the different steps how to get started.
In basic you will need to understand that the control systems have a given IP address, which you can alter in Project Designer on the Systems page.
This IP address is what the Touch Panel needs to point to in order to load the user interface from the controller.
On top of that you also need to get the Touch Panel within the range of the control system, so if the controller have IP: 192.168.10.50, you will need to get the Touch Panel in the same range, for example 192.168.10.52.