1. Click Response Restriction in the Restrictions section on the left pane of the Launch tab.
   
2. Click Enable.
   
3. Select One response per email to restrict multiple responses from a single respondent by generating a unique URL for every email address.
   
   
1. You can restrict when a respondent can update their responses:
1. Respondents can't update their response: The respondents will not be able to open the survey once they submit it. 
   
2. Respondents can update their response until they complete the survey. 
   
3. Respondents can update their response at any time: They can update the survey even after they've submitted it.
   
4. Select One response per unique URL to generate a unique URL for each respondent.
    
3. You can restrict when a respondent can update their responses:
1. Parameter name: Type the parameter name that will be appended to the URL.  
   
1. Do not allow URLs without the parameter: Restrict responses that don't have a certain parameter. This will be added to the URL of the published survey.  
   
2. Respondents can't update their response: The respondents will not be able to open the survey once they submit it.  
   
3. Respondents can update their response until they complete the survey: They can update their responses until they submit it. 
   
4. Respondents can update their response at any time: They can update the survey even after they've submitted it.  
5. Select One response per IP address to restrict multiple responses from a single IP address. However, you'll need to enable the Collect IP address checkbox to use this feature.
    
1. You can restrict when a respondent can update their responses: 
   
   1. Respondents can't update their response: The respondents will not be able to open the survey once they submit it.  
      
   2. Respondents can update their response until they complete the survey. 
      
   3. Respondents can't update their response at any time: They can update the survey even after they've submitted it. 
      
6. Select One response per device to restrict multiple responses from a single device by using browser cookies. As the survey's metadata is being stored through browser cookies, if the respondent clears their browser history and cookies, a fresh survey will be loaded. Any previously submitted survey response (partial/complete) will be considered a different response.
    
1. You can restrict when a respondent can update their responses: 
   
   1. Respondents can't update their response: The respondents will not be able to open the survey once they submit it.  
      
   2. Respondents can update their response until they complete the survey. 
      
   3. Respondents can't update their response at any time: They can update the survey even after they've submitted it.
      
7. Click Save.  
   

To allow respondents to save and update their responses: 

1. Click Response Restriction in the Restrictions section on the left pane of the Launch tab. 
2. Select a restriction in the Prevent multiple responses section to restrict multiple responses from a single respondent.  
   
    
   
3. Select the following to restrict when a respondent can update their responses:  
   
1. Respondents can't update their response: The respondent will not be able to open the survey once they submit it.  
   
2. Respondents can update their response until they complete the survey: Allow respondents to update their responses till they submit them. 
   
3. Respondents can update their response at anytime: Allow respondents to update their survey responses any time—even after they've submitted them.  
   
4. Click Save.