Create a layout that represents your assembly, subassembly, floor plan, and so on.
The layout is the root document of your design. You create a layout that represents your assembly, subassembly, floor plan, and so on. The layout uses 2D sketch geometry to represent your design components. You use the layout to position your components and evaluate design feasibility. When component representations in the layout are derived into part and assembly models, associativity is maintained between the layout and the components. Therefore, when changes are made to the layout or component representations, the 3D models are updated.
Another aspect of layout, when you use Make Components with sketch blocks, is the ability to change the arrangement of components without the need to update the components themselves. If you have a large assembly design package, this elimination of unnecessary revisions facilitates management of your design from concept through manufacture.