This tip is regarding how to combine different assembly and part "levels" within the same Bill of Materials table within CAXA, and the associated "Item Numbers". CAXA only allows the user to select a single "level" (grade) for each source BOM file. However, CAXA allows users to import multiple BOM source files, where each source BOM file can then be set to display a different level. The end result is that you can achieve a single BOM table that displays items from different "levels" within