This is what is happening in the movie(in case it is too quick).

1. Click at Project Level arrow - opens next level
2. Click on Window arrow - opens next level
3. Alt-Click on the arrow at Wind 2 open next 2 levels
4. Shift click on arrow at Wind 4 - open all the sub levels at once
5. Control or Right Click on an object gives you a popup button with acess to setting properties, editing script and userProps
6. You can copy objects from cards, background, windows and project that are not the frontmost one. Here I copy a graphic from a close window and paste it onto the current card.
7. You can use the popup button to filter the objects you can see.
8. An set properties of object you cannot select, in this case the visible of a button, but we can just as easily set props of object that are not on the current card, backgrounds or window.
9. Lastly the movie demos the renaming of objects, click on a name and it become editable, double click on the Wind, Bkgnd or Card opens it.