Hey ya'll, I'm trying to understand how to interact with the 'Order Items' page

Transactions > Inventory > Order Items

but am drawing a blank - really what I want to do is add a couple columns to the page like Last Purchase Date & Last Purchase Qty, but I cannot connect the dots to how that would be possible. Is there a way to add columns to the list of columns that show up when you click 'Customize'? or would doing what I want to do require making a suitelet, loading in the items via search etc. etc.? There seems to be a lot of functionality for that page that I'd rather not have to reinvent if I could figure out how to show a couple more columns