The fleet component structure groups components, or individual parts used in the assembly of vehicles.
Components are added to types as part of a two- or three-level hierarchy. In a two-level hierarchy, a type can be a direct child of a group. In a three-level hierarchy, a type is beneath a subgroup, which is beneath the parent group.

Vehicle Component Structure Hierarchy
You can access the fleet component structure by clicking Component Structure under Actions on the Fleet Management dashboard.

Link to Component Structure on Fleet Management Dashboard
Clicking this link opens a page that lists all the component groups in the system.