Tell us about yourself!
Hi Claudio,the happy answer for you is yes you can!If you look to the relay PCB picture (1st pic.) you will see that there are three red wires connected (VCC, GND, IN1) and one pin left without wire (IN2). So as far as you connect both relays in parallel you can switch the lights independently.
How to Build a Longboard
Building a Longboard -the complete process