Creating a Microsoft Advertising Source
Once you select the project you want to work on, you will see a similar screen as shown below. Select the orange button that says " + New Source"
After selecting the orange button that says " + New Source"
Select "Microsoft Advertising" for the type, then click "CONTINUE". Enter a name for the source and press "SAVE" when completed.
You will then be taken to the source configuration screen.
From here, you must select the connection that will be used to connect the source with the Microsoft Advertising API. Then you must choose the account that contains the report you wish to pull from the API.
After selecting a report, you will need to determine which fields from the report will be included in the source.
Finally you can set the Look Back Days to determine how many days are reloaded when adding new data to the source.
Once you are finished setting up the configuration, press save and the source is now able to run.
Additional Information can be found within the official Microsoft Advertising API Documentation