For adding custom iframe content, you have to configure a custom service.

First, add settings in the Cookie Master Core stack, e.g. following data for a custom Youtube service:

• Name: Youtube
• Terms: https://www.youtube.com/t/terms
• iframe Allow: accelerometer; encrypted-media; gyroscope; picture-in-picture; fullscreen

For the actual iframe instance, select following settings:

• Service: Custom Service 1 (to 5)
• ID: URL of the iframe
• Title: Select a caption for the content to be embed
• Thumbnail: Select a image from the assets as preview image (optional)