Setting survey restrictions
On the Restrictions tab of the survey, you can create new, or attach existing release conditions if you want a survey to be available to users only after they fulfill other specified tasks. Examples of release conditions include completing an Assignments submission, scoring a specified grade in a particular quiz, completing a Self Assessments submission, and being enrolled in a particular section. You can also use Release Conditions to make the survey available only to a particular role. Edit and change release conditions by clicking the Remove icon or Remove All Conditions.
If you decide to make the survey available with certain release conditions, you can also use the Intelligent Agents tool to notify students that the survey is available once they've fulfilled the applicable release conditions.
In the Availability area, the Hide from Users checkbox allows you to control the visibility of a survey.