You can use this feature add display logic to a group of questions. This can be useful if you would like to pose a certain group of questions to a particular demographic.
To set this up, first create a reporting section in the 'structure' tab and add the required questions:
Next, double click the reporting section, and select 'display logic' :
Enable the display logic, by toggling on, and select the question you would like to base the logic on:
Next add the rule. In the example below, it is set up to display the set of questions within this reporting section if the response to the variable question equals 'yes'
Once you have set up display logic on a reporting section, it will be denoted by the green icon:
You can also use this feature in combination with a multiple question page. For more details of this, read the article here
Please note: If you apply display logic to a reporting section, you will not be able to apply any display logic to the individual questions that sit within the reporting section.