Boost an offer from your Page
Offers are discounts you can share with your customers on Facebook. To boost an offer and turn it into an ad so more people will see it on Facebook, first you’ll need to create an offer from your Page
Steps to boost your offer from your Page
Go to the offer on your Page and click Boost Offer.
Choose your audience and budget based on how many people you want to reach and how long you’d like your boost to run. You can also click More Options to change your payment method.
Click Boost Offer.