Read an overview of the Disable Idea Submission functionality and when you should use it
How to temporarily disable Idea submission
1) Navigate to the Challenge that is currently accepting Idea submissions in a Gather stage.
2) To disable idea submission, click Manage > Disable Submission.
3) The +Add Idea button is immediately removed from the Challenge page and users won't be able to submit ideas. Users will still be able to edit and vote and comment on existing ideas.
4) To reopen idea submission, click Manage > Enable Submission. The +Add Idea button will immediately display on the Challenge and users can again add Ideas.