Multi Hall effect flow meter on One ESP8266 : Interrup mang.

Hi,
I would like to use the same ESP8266 board to manage more than one flow sensor ( hall effect ) .
i didn't find the way that i can manage the interrupt.
Can you help me ?
I would like to use the same ESP8266 board to manage more than one flow sensor ( hall effect ) .
i didn't find the way that i can manage the interrupt.
Can you help me ?