To allow respondents to edit or change their survey responses:
You can allow people who take your survey to edit their responses either while completing the survey or after they submit the survey, or you can prevent respondents from editing their responses after they submit them.
The available Response Editing options depend on the collector type you're using.
Responses are saved and submitted when a respondent clicks the Next or Done button on each page of the survey. Responses don’t automatically save as each question is answered—they are saved and submitted page by page as respondents progress through the survey.
If you choose to turn Response Editing off, respondents can still edit answers when they're on a given survey page, but not on previous pages—the Previous button is hidden from respondents when they're taking your survey.
However, when previewing your survey design, you'll still be able to use the Previous button to go back and edit responses because collector options aren't active when using a preview link.
To edit a survey response for a respondent: