Adding GIFS and Changing Layer Names in Alpha


I think tweening is a useful thing in Wick, but I want to put GIFS in my animations. It worked in the Beta version where you could just add it and when you select the Run button (not the preview) it’d show the GIF. But in Alpha, it won’t let me add it in.
I also don’t know how to change the name of the layers. I find them very useful to separate parts, such as background, characters, and sound. How do I name the layers to keep track of them easily?