A Greeting is used in the survey to display a message post the screening question. It can be setup as :
Step 1 : Create a campaign and add the test.
Step 2 : Add Greeting in the test flow double clicking on the Greetings button.
Step 3 : A predefined Success and Screen out greetings will be viewed which can be used in the survey.
Step 4 : The greeting can be edited by first clicking on any one of it. A new tab will pop up where the changes can be made. Once the changes are done, click on the save button.