On the Structure tab of the Equipment Configurations screen, you can preview the structure the generated equipment will have. This tab shows child equipment configurations and parts associated. The tab also shows both in their context of the chosen System, Assembly, Component Level and Component Location. For example, if a wheel is a part of the drive train (System Level), the front axle (Assembly Level), the wheel component (Component Level), and the wheel is located on the left front of the bus (Component Location), then the bus structure would show each level. If the disk brakes are defined as a spare part and they are associated to the bus in a similar way as described for the wheel, the brakes would show up in the same structure along with the wheel.