Graphical display of waveform changes

[Denver82]

Good morning everyone and thanks in advance for your help.
On the fantom 0 series I don't know how it is possible to have a graphic view of the waveform modeling in real time on the display. by changing the oscillator parameters I only have audio feedback but I don't have an actual design of the waveform shaped by the parameters I'm going to configure. If it's possible, could you tell me how? Thank you.