Editing Components

Click the plus sign next to any Key in the Database tree in the left-hand side of the Edit Database dialog box to see whether the selected Key has Components, Descriptors or both grouped in it, then click the plus sign next to the Components icon to view the items belonging to the selected Key.
the Component Quantity
the Unit used to calculate the component
the number of component units per Reference Quantity unit, e.g., eight pieces of tiles per square meter of a wall’s inside surface.