1. Select either the Composite Floor System tab or the Concrete Floor system tab.
2. Select the Decking or Slab Property to be changed by clicking the desired Decking Property in the Decking Property list box. That entry will be highlighted and the values for that decking property will automatically be entered into the other dialog box controls.
3. Change the properties by modifying any of the values or settings.
4. Click the Change button. The changes will be shown in the Decking Property list box.

If the Decking Property is currently assigned in the model, the changes in properties will automatically be updated in those assignments.