Whenever you add an element (text, link, video, image, etc) in Design Studio, it is automatically created as a layer. You can find the layers on the right side menu. The layers menu offers more accessibility, as through it you can select, move, and group layers easier.
A newly created layer comes with a predefined name: shape, video, image, and so on. The only exception is the text box element. In this case, the first words from the text box will represent the layer’s name.
For better organization, you will probably prefer to change the names of your layers. The process is simple, all you need to do is double-click on the layer you want to rename and type your own description.
The best part is that when you change a layer's name, it will change in the Stats page as well, to avoid any confusion.
Start renaming your layers!