You can edit a survey after you at any stage - when you create or send it out. If the survey doesn't have any responses there would be no issues editing the survey, including all questions. If the survey is live, meaning it already has anything more than one response, we recommend you not to make any changes in the survey.
To edit a survey go to: Login » Surveys
On the Surveys tab, click on the survey name you wish to edit or click on Edit.
If you are logging in for the first time. You will only see the Create a New Survey button. You can start by creating a new survey.The survey name you clicked on will be selected. You will be taken to the Edit Survey tab, where, you can edit the survey.
This feature is available with the following licenses :