Custom fields in PB rows

I have an article, built with PB, that's an online catalog. Each item has its own row which consists of 2 columns, an image and text.

Is it possible to have a custom field appear in each row rather than for the entire article? I want the customer (who's going to be updating these pages) to be able to make a simple selection - "In stock" or "Out of stock".

Hi
this is a request relative to the custom fields, not to page builder ck ...
you can do the same in page builder as you can do in a native article. If you can do it in your article you can do it in page builder ck
CEd

Thanks for the answer Ced. Sorry, I didn't phrase my question properly...

I wanted to add the custom field to each ROW, not just the page. Because these pages are going to be an online catalog (but the client doesn't want to use an e-Commerce extension) he wants to be able to show "In stock" or "Out of stock". The simplest way I saw of doing this was doing a row per product, then adding a dropdown list as a custom field to save him typing and retyping. I may just have to do each product as a separate page to accomplish it this way.

I'm sorry to say that your request seems special to me ...
what you are asking is an addon that would manage a custom field ? what about creating an element library and just drag and drop it in your row ?

(I'm not sure to really understand what you want to do ...may be you can send me some screenshots ?)