Web Flutter App that communicates with ESP32 wearable - graphical display function

I need a second programmer that adds a graphical display of the 4 ADC channels that is connected to an ESP32 - basically just for now reading ADC data and displaying it in a ADC-value over time graph - just simple basic feature - just for me to see if you can read existing code that generates the attached web app UI that until now reads and displays individual values from a single ADC channel and integrate code for this new feature. If this works out well this can become a longer term project for you as the existing programmer is more experienced in the connected hardware design. You also need to be experienced in reading and modifying the connected Arduino firmware