We have full guides on how to do this super quickly and easily using our chrome extension.
Here are a couple of links to start you off:
Ad Tester - Getting Started
Guide To Creating Placeholders For Ezoic Ad Tester
Have you had a chance to check out our WordPress plugin for setting up placeholders? The plugin will generate placeholders for you and create an optimal layout across your whole site. This also means they're hardcoded if you'd like to change your theme in the future without impacting your site's revenue performance.
We've had new and existing publishers use it with great results, leading to higher EPMV and better earnings in a shorter timescale. Here's more on that:
Setting up Ad Tester placeholders with the Ezoic WordPress Plugin
You can gain access to a Dedicated Onboarding Specialist once you reach Level 2. To compare Levels, please feel free to check out this page.