It depends on what you are calling a section. If it is a scene you can test scenes individually. If it is a timeline design, you can temporarily put a command to gotoAndPlay(#) in the first frame to take you where you want to start.
I don't know the difference between those. It's an animation with multiple layers+many frames. I want to start at about 2/3 of the way down the timeline, and I want it to be previewed, not just watched on the stage.
How do you even get to gotoandplay? And how do I use it? (u can probably just tell me how to do that one command.) Please and thank you.