To change the bid adjustment for a remarketing list that's already applied to a campaign or ad group:
- Sign in to your Search Ads 360 experience.
- Navigate to a Microsoft Advertising client account.
- On the page menu, click Settings, then go to Campaign settings.
- Click on the desired campaign from the list.
- Click to expand Multimedia Ad Bid Adjustment.
- Select “Increase” or “Decrease” from the dropdown and enter a percentage.
- You can increase bids by up to 900%.
- You can decrease bids by 90%.
- Enter a new adjustment and click Save.