There is a start and end date option available to present your offer to visitors. This is a great way to create promotions prior to a special event or holiday and automatically shut them off when the special ends.
STEP 1: Log into your account. Once in the dashboard, navigate to "Promotions".
STEP 2: Once in the "Promotions" page, click on the drop-down button labeled "Actions" next to the promotion you'd like to edit. From the drop-down list, click on Edit Design.