What are they?
Ad Set Groups - Move is a powerful workflow automation feature designed to help you manage the accounts and automatically move Ad Sets between Ad Set Groups based on rules you define. For example, you can have AdRules automatically move top-performing Ad Sets from a starter Ad Set Group to a different high-monetizing Ad Set Group based on their individual performance. Similarly, you can have AdRules automatically move dead Ad Sets out of an Ad Set Group and into a dead / reporting only folder. This will help you keep your Ad Set Groups clean and simplify account management.
Note: you can only move Ad Sets with the same bid type and campaign objective into similar Ad Set Groups. For example, you can not move Ad Sets with a bidding type of CPA into and Ad Set Group with a bidding type of oCPM. Also, you can not combine mobile app install objectives with re-engagement or website campaign objectives.