How do show additional columns for editing in your Bulk Editor

Hi

I have always loved your plugin for quick editing of products and stock for client sites.

One thing I am stuck on, is HOW to add a particular column to the view, so I can edit that also when editing pricing etc.

I am using Facebook for Woocommerce plugin and when I look under Products I see the columns there whether products are synced or not.

I would like to SEE THIS COlumn in your editor, and hopefully be able to CHANGE STatus from “DO NOT SYNC” to “SYNC PRODUCT” or other way around.

I just need to be able to ADD that column in your Bulk Editor.
The issue I am having is that we have heaps of Variations of products for Tshirts, and I don’t need all variations shown in Facebook. Therefore I would like to ‘TURN ON’ or “OFF” variations in Bulk Editor in the Facebook to Wocommerce column.

Otherwise I have to manually click on every product and EDIT , then go to Variations, then open each variation and change status, which is very time consuming with bad internet and would rather be able to continue using your plugin for ALL ?

How do I achieve this please ?

Thanks
Kristin