How do I set up a sale/promotion on my shop?

Hello, I’m struggling to set up a promotion for my shop. I’ve read an article that says promotions should automatically appear in your product list and you can turn them on and off but I don’t have this option on my product page. I only have the option to edit, delete or share in my actions tab. Can anyone help? Thank you.

Hey there! Did you follow the instructions here? Cyber Week Sale