If Action Alerts feature is not enabled, click on the "Enable" Button to Enable this feature on your survey.
An Action Alert will be set up by default. Click on the Edit link for setting up the Criteria and completing the set up.
Here you'll have to enable a "Group" that defines the condition you are looking for. This is called the Rule Criteria. If there is no Criteria defined, then click on the Add New Criteria link to set up the required criteria.
Once at least 1 criteria is created, make sure that the criteria that you are interested in is enabled. This is done by checking the check-box next to the criteria.
Then you need to tell the engine, what to do when a survey comes in that matches the group you just enabled. The "Action (Rule Match)" column specifies this.
Test out the rule by previewing and taking the survey. Make sure you choose the options in the survey that trigger the group/rule and you should be getting emails depending upon what actions you choose!