Event-Specific button code

Hello

I have a landing page: https://www.letsexploreboston.com pw: bpm. The media company we're working with is asking to add custom tracking codes in 3 areas. The main landing page and the two buttons that are on the landing page. I can figure out how to implement the pixel on the landing page itself, but I'm having issues with how to add the custom snippet on button specific. 

The instructions from the media company are as follows:

Set this tag to fire when "Visit the Market" button is clicked: <script>aap({ pixelKey: '4714665652016067849', pg: 33367 })</script>

Set this tag to fire when "Visit the Greenway" button is clicked: <script>aap({ pixelKey: '4714665652016067849', pg: 33365 })</script>

How do I add button-specific code?