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1. Toolbar (Shortcut: CmdCommand(⌘) + Alt + -Option-T): Used to add components to your compositions and provides several other functions.
2. Library (Shortcut: CmdCommand(⌘) + -L): The Library shows the content of the repository Repository which is specified in the preferences “Settings” of Composition Builder. It can be used to open existing compositions.
3. Workbench: The workbench Workbench is the visual representation of components. Here This is where you can modify a component's position and size.
4. Timeline: Used to set, remove or modify keyframes, scrub through your composition, and to define the order of the components order.
5. Inspector (Shortcut: CmdCommand(⌘) + -Shift + -I): Used to adjust attributes of components and setting define composition-specific settings.