This automation can be configured directly from the board's Automation section. Follow the steps below to complete the setup and ensure the automation runs as expected:

  1. Open the board that contains your courses

  2. Open the Automations dashboard and click on Create automation

  3. Choose the trigger "When date arrives"

  4. Click on When to select when to notify users  
  5. Click on date to select the Expiration date column 
  6. Add the action "Notify someone"
  7. Click on notify to customize the notification message with fields from your board
  8. Click on someone, select Item's assigned to notify all course assignees

  9. Add the action "Push date"

  10. Click on date to select the Expiration date column 
  11. Click on some time to set a new expiration date
  12. Create the automation

Example:

If course creators are also getting notified and the date is pushed within another automation, the expiration date should be pushed only by one automation.