Creating a Google Slides feed takes 3 simple steps.
In the Feed Name field, give your feed a recognizable name. You can change this later if needed.
Next, click "Add Content" to add the link to the Google Slides presentation.
1. First, get the embeddable link from Google Slides.Go to the Google Slides presentation you want to add to your feed. Click File → Share → Publish to web.In the pop-up window, click on “Embed”A code snippet will appear in <iframe> format. Copy only a part of the URL found within the src attribute, as shown in the screenshot below:
2. Add the video link then click "Add content".