Event responses ads are ads that help drive responses to your event. If you’re holding a party, an open house, etc. these ads may be used to target people around your area and to see how many users on Facebook are planning to go to your event. For example, a user can click on the “Join” link on your ad and it will display the amount of people who are going to your event e.g. “25 people are going”.
First you would need to create an event or offer by going to your Page’s Timeline and clicking Offer, Event + and select Event. Fill out the name and details of the event and click Create.
Go to your Facebook page after you have logged on and click “Build Audience” at the top right of your page. Click on “Use Ads Manager” and click “Create Ad” at the top right of your page. Click on “Event Responses” from the list. Select the event you want to promote and fill out the audience target, set a budget and place your order.