Setting Item Numbers in Indented BOMs You can select flat numbering, detailed numbering, or no numbers for subassembly items in indented BOMs. Select item numbering in the Bill of Materials PropertyManager. To set subassembly item numbering in indented assembly BOM tables: In the Bill of Materials PropertyManager, for BOM Type, select Indented and a numbering scheme: Option Description No numbering Detailed numbering Flat numbering Click . Parent topicIndented BOMs Related concepts Working with Parts or Assembly BOMs BOM Assembly Structure and Balloons Related tasks Creating Indented Assembly BOMs Opening the Bill of Materials PropertyManager for Displayed BOMs Dissolving a Subassembly or Weldment in BOMs Related reference Drawing View Properties