In the conceptual design environment, you can specify dimensions for forms. Form dimensions work similarly to dimensions in the project environment. 
- 3D controls report current dimensions when active. 
- Make temporary dimensions directly in the drawing area permanent by double-clicking the dimension and pressing Enter. 
- Specify dimension-related parameters for the model lines. 
- Assign parameters to label dimensions. 
- Adjust the dimension parameters and all of its related geometry adjusts.