Set LoRaWAN private mode in Arduino IDE

I’m using LoRaWan_APP.h as a template in my arduino code to develop an application. I’ve had great luck using Cubecells with the TTN public network, but I’m now trying to use it with a private network. Is there any way to set the LoRaWAN parameters to use a private network within the LoRaWan_APP.h ? I believe I need to change the Syncwork for this to happen.

Any guidance is appreciated.

Please refer the pciture:

That’s exactly what I was looking for, thank you!