I dont know what toturial to search...
Can you give me an direction?
You don't even really need to do the tutorial - just have a read through.
If you click on the Tutorials link at the top, the first 2 'Top' tutorials are both by Ashley, and are definitely worth reading. You should then undrestand a lot more about how C2 works.
Then try and amend your project to how you want.
If you still can't do it, re-download my example which now does what you want and see if you can see the changes.