How can I add the product code in the BOM Components view?

In the BOM Components list view there is a column for the BOM's product, the first column. It contains the product name but not it's code (Internal Reference, aka part number). When working in the debug mode to modify this view, how can I make the code appear alongside the name as it does in the third column where the component is described? What is the field name for this?

The field shows Name Only. How can I switch to Code + Name? Code + Name : [PCSC349] PC Assemble SC349 Name Only: PC Assemble SC349