Multi level asset BOM?

Hello EAM community,

In some cases, our list of materials in asset BOMs is becoming quite long making it not user friendly to find the correct part for a work order.
Is the feature to have multi levels (or sub assemblies) in a asset BOM available so that we can group the materials by the sub-assembly they belong to. If so, how?

Example:

Asset BOM: ABC
              - sub-assembly 1
                     > material 1
                     > material 2
              - sub-assembly 2
                    > material 3
                    > material 4
     

Thanks,
Mario