First Follow Theme Options > General Settings. Here click Google Adsense, and the Adsense field will appear.
From here you can create multiple Adsence. When you open a slide there are two fields. One is for the Adsense title and the other is for the Google Adsense code. Copy your Google Adsense code and paste it here. Then Click Save Changes to save the information. Now you can use this Adsence from the Advertisement Widgets and Page Builder Ads Widget.