You would have a default customer satisfaction survey configured on your account. If you are looking to create a new and customized Satisfaction Survey, you could have this set up under Admin -> Workflows -> Customer Satisfaction -> New Survey.

Once this is configured, you would be able to choose from the Survey list on which Survey you would like to associate with your account. At any given time, you could have only one Survey turned on.

This feature is available from the Pro plan (Previously Garden) onwards.