Once the feature is enabled, you can access it from the side navigation list.
Click on the Immersive Ads item on the navigation list
Immersive Ads highlighted in the side navigation
Next, click on the Add App button and provide the required details to create an app.
Add App button highlighted
Add demand source
Once the app is created, add the demand sources by clicking on the Add Source button
Add Source button highlighted
Add your AdMob unit ID and Floor eCPM here
Avoid adding units without eCPM floors. The eCPM floor mentioned here would be used to determine the priority of the ad unit.
You can add multiple demand sources as per your requirement. The demand source with the highest eCPM floor would be used first.
Selecting Ad Serving Strategies
Once you are done adding ad units, you can select the ad serving strategy you want to employ. Currently, you can select between Waterfall and Header Bidding strategies.
By default, Waterfall strategy will be used.
Select an Ad Serving strategy here
Waterfall Process
Header Bidding Process
Go Live
After the demand sources are added, make the app live by clicking on the Go Live button
Go Live
The dashboard side configuration for the SDK is complete. You can now start with the integration process.