The obvious requirement is that your website is using WordPress. We will assume if you are here that you have that taken care of already.
Google Analytics Gtag.js
If you opt to use Google Analytics with ActionRabbit you would need to have Gtag installed on your website. If you already have this in place you don’t need to worry about implementing this. But if you don’t, you should default to google analytics preferred config. That means that you should install your tracking code in the header.php file of your WordPress theme.
For more information about how to add Gtag.js to your website, consult your web developer or whoever handles your website. You can also view google analytics documentation. If you have a legacy version of google analytics you may consider upgrading your implementation. ActionRabbit Google Analytics will not work with old legacy versions of Google Analytics.