Qubino Relay, how to use input 2 and 3?

I am struggling to understand how to use Qubino Relay input 2 and 3. Current config is that I have to switches in the same installation box. Both are push buttons. I have connected the left one to input 1 in the Qubino relay to be able to control my light. Works without problems. Now, I want to connect the right push button to input 2 on the relay to trigger a script in HA. How can I get this to work? I would appreciate some insights on Z-wave settings for the Qubino. Thanks!