Understand how to best structure your Apple Ads account if you run ads on the App Store in multiple countries and regions, or operate as an agency.
https://ads.apple.com/app-store/help/get-started/0010-structure-your-account
Learn how publishers can add users to Workbench.
https://ads.apple.com/apple-news/publishers/help/workbench-setup/0010-add-users-to-workbench