What you are describing seems like functions.
There is already a function plugin for C2, I used it a lot in my entry for the competition. It's not an official C2 plugin yet, but it works quite well. I suggest you give it a try and see if it's what you're looking for.
Exactly, where can I get theses plugins?
I'd also suggest you to first start with the beginner's tutorial and check out all C2's examples in the install folder.
Buddy, I'm a stater in Construct 2, but not in programming. I understand how it works. This question I asked is not trivial starter. What I am trying to learn is how to reuse my actions (code) to be the simplest change in a future program.
Thanks for reply!