To edit the Days to Default Setting:
  1. Navigate to Core > Settings> School Information
  2. Click on Years and Terms tab
  3. Filter on a School Level under Terms
  4. Across from the term click on pencil icon in Days to Default 
  5. Change the Days to Default
Warning: Duplicate assignments may occur when the days to default cross over into the next term begin date. To avoid duplicates, make sure the days to default end before the next term.