Work in BOM
Once the BOM is created, you can easily see which parts and assemblies do not have certain types of attributes or values and write them directly into the BOM cell.
All values written in the cells (which are actually the properties and customdata of the parts/assemblies) are added directly to each object, so there is no save button.
In the upper right part of the window is the BOM tab; there you can see (and also edit) all the properties of the selected part/assembly.
To view the properties of another part/assembly, double-click on another row in the BOM or select another part of the tree.
Changes made to the BOM grid are reflected in the BOM tab.
Double-clicking on a BOM cell updates and selects the corresponding element in the Scene Browser.