Note: This topic is for Roombook users only. 
The Room Quantity Calculation allows you to apply and override materials on calculated faces. You can also define materials for surface material styles. 
- Click       Edit Surface Materials. Edit Surface Materials.
- In the Roombook Surface Material Style dialog box, click the browse button. 
 
- In the Materials Assignment dialog box, apply materials to the surface. 
 
- All Materials from Drawing
- Lists all AutoCAD defined materials which are available in the drawing.
- Selected Materials
- Materials which are assigned to the selected room quantity.
- Assign By 
- Transfer the materials from one side to the other.