I started an animation requiring a multitude of objects and I'm starting to find it difficult to remember which one is which when they are all called "round rect," "rect 2 copy 2," etc. I found it easier to animate if I let them remain as objects rather than symbols, but it has started to become difficult to determine which object I need to animate next. I tried turning them into symbols, but it seems to complicate things more for me.
right click on the element on element panel on the right and choose rename. Or rename on the left panel on the top. You can give them any name you like just do not start with a number or special character.