Multiple Vibration Motor

I have attached the the vibration motor circuit using arduino. However I don’t know how to make the circuit for two vibration motors. How about connecting the second motor parallel to the first one?

Yes, you can connect a second motor across the first one.
You should change the value of the 33ohm resistor to 15ohm, or put a second 33ohm resistor across the first one.
You could also build a second circuit, and connect that to another pin of the Arduino.
Then you can activate the motors individually.

Change the 1k on the base to 470 ohms too.