Only regular campaigns can be scheduled to go out at a later date and time. Autoresponders, recurring campaigns, and A/B split tests all have their own (and slightly different) scheduling mechanisms.
When you reach the Schedule or Send section of the campaign creation process, you have the option of sending your campaign immediately or scheduling it for later. You have two calendar years (the current year and the next) to plan the delivery of your campaign. Select a specific time, and click on Schedule.