First of all, you must connect the srf's one by one and chance the adress(at least for 3 of them , so that they all have different adresses).
Connecting shouldn't be to difficult, just connect the 5V and GND to arduino power pins. And the SDA and SCL go to pin 20 and 21. Pull up resistors are included in the board.
Then just send these commands to the old adress: 0xA0, 0xAA, 0xA5, <new adress> . So if we want to chance the adress to E2: