Sub-locations and sub-assets can be used to help you organize your assets and your buildings or locations. Right now we have 2 layers of hierarchy for locations and 2 for assets.
We generally recommend having fewer hierarchy levels for simple setups.
Most commonly, locations are addresses.
Sub-locations tend to be particular areas within the building, for example east and west buildings, floor 1, 2, etc.
Assets tend to be physical spaces or equipment and sub assets are typically components within an asset