There are two options for extension settings on your assessment.
If a candidate's assessment passes the deadline and they have not submitted their assessment, they will see an option to "request extension".
As the employer; you have the option to:
Automatically approve the first extension request.
If this is the first time that a candidate is requesting an extension on their assessment, their request will automatically be approved. This is designed to save time for your team to eliminate the need to review extension requests.
Enable or disable extension requests:
You also have the option to enable or disable the candidate's ability to request extensions.
Both of these extension settings are found under your "settings" tab, "Time Limit and Deadline"