BOM Table question: Row for Custom Properties

I have a configured BOM table I want to add a row to, to contain custom properties that are config-specific.  Wondering if this is possible or what functionality I'm not considering.

 

In the example below, I have references to particular notes that apply to different configs.  Must I make a separate table for this or is there a way to integrate into the BOM table?

 

Thanks for any ideas...

Kurt