All questions are by default mandatory. However, it can be an advantage not to force respondents to answer certain questions, such as open-ended questions, which the respondent may not have a relevant comment for. There are two ways of disabling this setting:

When creating the question

1. Go to your survey and click on  to add a question.
2. Upon filling out your question, you will be presented with the setting answer is required, which you can disable.

After having created the question:

1. Click on the question you wish to make optional.
2. Click on settings.
3. Disable the answer is required setting.
4. Close the side menu to return to your survey.