Use the two white buttons on board to change the settings. Press the top button for dwell up, and bottom button for dwell down.
You are to hold down the white button and listen for the chirp sounds, because each chirp=one setting up or down. This applys when you are changing all settings.
Pull and hold the trigger then press the top white button to increase top rof, and hold trigger and press the bottom button to decrease top rof.
And to change fire modes, hold the on/off button but quickly press and hold the top/bottom white button b4 board turns off. Once you hold the white button in, listen for the chirps and know which fire mode you want.