Problem with actions

Hi! its been a while since I use Blender, Im trying to create some action and action constraints. The problem is that when I create an animation for an action the keyframes appear like they are on the main timeline, and I cant remove the frames from the main timline because it removes the keyframes from the action too.

I know they are not in the main timline because when I change the action the keyframes change, but I don’t know how to leave the main timline clear from all actions, to start animating. Resuming how do you “unselect” an action, so the main timline is clear from all action?

Hope the message is not too confusing