To set up double headers or triple headers in the Schedule Builder:
1. Open the Schedule Builder (Schedule/Scores > Scheduled Events > Schedule Builder) and click Weeks
2. Select the number of Gamedays per team you want.
In most cases where a schedule needs double or triple headers, this will be '1 Gameday'.
3. Click the link below the box highlighted above to customize your gamedays
Change 'Gameday Type' to Double Headers or Triple Headers.
4. Click 'Apply to All Weeks' if your whole schedule should consist of double headers or triple headers
5. Once finished, scroll down and click 'Save & Rebuild Schedule'