Even after a survey has been dispatched, you can add contributors to it. If you remove contributors who have already completed the survey, their data doesn't appear in the results.
Step 1. Go to surveys
Click the menu icon on the top left of your screen and click Surveys.
Step 2. Select open
Select Open in the Status drop-down.
Step 3. Click the survey name
Click the survey name to edit it.
Step 4. Add or remove
Scroll to the Contributors table. Click the plus icon to add users. To remove a participant, point the participant and click their 3-dot icon on the right side of the page. Select Remove.
Step 5. Select users
If you're adding participants, select a filter in the first drop-down. Select the users to add and click the close icon .