Yes below 5mb, otherwise you can post to youtube and share here. Thanks

https://youtu.be/4KqzpTBSPP8434

https://youtu.be/n-VwTsU1Xdk

base your live demo

I am sorry the promos are for POS sales only :( Please try to add sale from POS page.

when we add the sale from pos page the one get one free item price appear twice. technically the qty should be 2 and price of one item. image attached

You can use promos with cart item addition settings set to increase quantity. Thank you