Select your Board's USB port (once connected) and board type in the "Tools" tab
Set the correct Lo-Ra region in the Tools tab
Set the correct Lo-Ra freq (in hertz) at #define RF_FREQUENCY default is 915Mhz (fine for NZ)
press Ctrl + U to upload lInt to your board
This code is in the very early stages of development and is not far off the Heltec's Ping Pong demo, this notice will be updated with the current stage of development. ;)