Many components in DesignBuilder HVAC are composite components and are themselves composed of a number of sub-components. Examples of composite components include air handling units and various items of zone equipment such as forced air units (fan-coil units, etc.) and air distribution units (VAV terminal boxes with reheat, etc.). In order to access and edit the data associated with each sub-component of a composite component you first need to go to the component level (by selecting it from the navigator or double-clicking on it with the mouse) and then you can select and edit any of the appropriate sub-components:
