What you are asking is extremely basic.
Have you read the manual?
Have you done any of the excellent beginner tutorials?
If not, please do. They will give you a very good basic understanding of the Construct 2 Event system.
As it is, you don't appear to have a good enough understanding to understand the answers (which are correct) that are being given to you.
If your vision so exceeds your ability, then look to something closer.