When this feature is enabled, instructors and students will begin to be prompted with a list of existing posts that might be similar to their question, note, or poll. They can click on a post in the list to open it in a new tab. This feature is enabled by default.
1. Click on the Manage Class button:
2. Click on the Customize Q&A tab:
3. Click Enable or Disable next to Duplicate Post Suggestions (Click Save Changes when you're finished!):