https://share.descript.com/view/RQRRooKwiOC
Start with your icons. They have to be unioned. and your key lines which should be behind your unions named keylines and componentized. They're completely separate.
You select all the icons and with their key lines in one giant selection, start the plugin and they should list all the icons in a row (union, union, union, etc) and you can quickly rename them and tab through each icon. Once you are done you press generate and it will output all named live and flat icons that are components.