All campaign choices happen at the ad group level. A campaign will begin when its first ad group starts and it will end when its last ad group concludes.

​​When setting up a new ad group, we offer two timeframe choices:

• Start immediately and run indefinitely. This is the default setting and means your ad group will run until (a) your ad group budget is reached or (b) you stop the ad group manually.

• Set start and end dates. If you choose this option, your ad group will only run during the time range you specify.

The first option is useful for “always-on” activations, and the second is great for activations looking to target a specific event, such as a limited-time offer, event, or season.

You can set your ad group dates according to your advertising goals and update them at any time. 

There are two options available when you set up campaigns. The default structure provides much of the control of budgets at the ad group level. When using our default settings you must select both a daily budget and a start date for each ad group. You may also input a spend cap to ensure that the ad group won’t spend more than a specified amount.