When creating the survey you are essentially just creating an online form with survey questions instead so when you are creating the form (or survey) - when you edit the form
You need to go to the "Fields" tab to enter in the additional fields you need for your survey. These fields are created using the "Build & Group Fields" area (https://support.zululabs.com/index.php?/Knowledgebase/Article/View/159/32/what-does-the-build--group-fields-page-allow-me-to-do)
You should see on the right hand side of the screen a dropdown list with all the field groups you have created. Select form this list and drag the questions into your form.
Once you have added all the fields/questions into your form you can then get the link you need to use in emails or on the website.
The link is located in the "Web Form URL" tab
Here you can use the Direct Link (at the bottom) to link to the survey via your website or you can add it to an email.