A Page Manager can enable this to display by:
  1. Navigate to School website > Website Managment > Websites 
  2. Select ... > Edit Website > Detail Page
  3. Click the wrench icon for the Team page and click Edit Page Content
  4. Locate the Schedules block
  5. Click the cog icon
  6. Mark include practice schedule
If this is already enabled or you only want to publish the practice schedule on the back end, see: How to publish athletic schedules to show on the calendar?