The Compose task panel serves as a repository of model elements that you can drag and drop onto the Design board to compose the model logic and flow. (When working on the Layout board, the Compose task panel enables you to add basic and advanced controls to the view and container elements that are already added to your model. For more information, see Adding Controls.)
You build your model by dragging the required element icon from the Compose task panel onto the Design board. After you have placed elements on the Design board, you can also drag out from their input or output ports and use the options in the context menu to create a connected element.
The Compose task panel content changes according to the board that is currently displayed in the workspace. When working on the Design board, the Compose task panel displays the following model element types: