As you build scripts in the canvas, the app will automatically populate the Explorer on the left side of the screen. Constructs attached to a script will be shown in the explorer has been nested within that script. Similarly, assets attached to constructs will be shown as nested within those constructs.
Expand or collapse items by using the toggle button. Expand all or collapse all by using the buttons at the top of the Explorer.
You can also hide or show the entire explorer panel by clicking the toggle button on the rightmost border.
Click and drag that same border to change the panel size.
Find items using the search bar at the top of the explorer.