1. Create a new file (FLA) in Flash.
2. Click on “New Symbol” icon at the bottom left-hand corner of the library.
3. Select “Movie Clip” button as an option when the “Create New Symbol” box pops up. Rename your movie clip.
4. Drag objects from your stage into the library to turn them into a symbol.
5. Movie clip will have its own timeline and layers. You can work with them as you would your main Flash movie.