How to monitor, sample, and convert several analog signals with the ESP32 ADC ?

[Fran_iii]

1 - At what speed does the ESP32 Analog to Digital work?
What is the maximum samples per second that it can convert?

2 - Is there a built in way to monitor, sample, and convert than one analog signal with the on board ADC?

3 - If not how would you monitor sample and convert more than one analog signal?

Thanks for any help.