Previous step - Add and verify your website(s)
Once your website is verified you need to create an Ad Channel by clicking on the “Add zone” button.
Сhoose the type of Ad Zone you want to create (In-Page Push (Banner), Native Banner, Onclick (Popunder), Push Notifications, Direct link (Direct ads), Interstitial) and click "Get tag".
Then you just have to grab the code for your Ad Zone.