Insert Adsense Code
If you have a Publii theme you can insert your AdSense code. For example, in a theme like Editorial at: https://marketplace.getpublii.com/product/editorial/ – if you scroll down that page, under the heading “Dedicated Ad-Space”, you can see how you can put your ads above content, below content, and on the right side columns.
So the key is to enter your AdSense ad code into the relevant ad sections set up for your theme. Or, if you’re developing your own theme, you’ll need to create the ad sections first.