Movie clip problems

Ok so I have looked through the forum and I have found simillar topics, but nothing exactly for what I am looking for.

I am trying to initiate an action when a certain clip is reached. For example when a user is in the news section of my portfolio, when they click on the button for the contact section, the news section will play its outro animation, and when that is done the contact section will play its intro animation. I know that something like this can be done with loading an external movie clip, but I don’t really want to do that.

Any help would be greatly appreciated. Feel free to message me if you need me to explain myself clearer.

Thanks in advance!