I would like to have a sheet on a drawing that is the Master Bill of Materials for assemblies that I am detailing, that contains part numbers for each assembly, and then additional sheets with BoMs for each sub assembly, and for each sub-sub assembly, etc, without ever reusing a part number.

Optimally I would like to use indented numbering, such that the Bill of Materials for the subassembly called out on the Master as Item 3 read Items 3.1, 3.2, 3.3, etc.

Right now the only way I have figured out how to do it is to manually override every Item No., but this is very inconvenient when I make a slight change to an assembly with thousands of parts.