You can change the campaign rate at any time.
If you change the value in the Rate field, the change will be applied retroactively.
If you don’t want the change to be retroactive, create a new date range:
- Click the Set multiple date ranges checkbox (to the right of the Rate field)
- Set the dates and rate
- Click Submit
Note: Editing the rate will not affect the existing weight of the ad. You can change the weight manually in Rank Ads.