The main monetization settings are located on the left side of the builder.
If you want to work with Admob, go to Admob part in the ‘’Monetization’’ section and insert all necessary keys.
Same with Facebook.
After you make all general settings in the left part, you have to choose which activity you want to run ads.
Choose the activity, press ‘’Ads’’ in its settings in the right part, and choose which ad network and what kind of ads you want to run in it.
After you do so, you will see signs on the activity:
BAN – for banners
INT – interstitial ads
This shows what kind of ads will be run in this specific activity.