1. Select the Beam Section to be changed by clicking the desired Beam Section in the Concrete Beam Section list box. That entry will be highlighted and the values for that section will automatically be entered into the other dialog box controls.
2. Change the properties by modifying the Section Label, Shape or Geometry.
3. Click the Change button. The changes will be shown in the Beam Section list box.

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