Make sure you are logged in and in the correct event
Sections in the registration form can be depended on answered date fields and option fields (one answer possible).
Create two sections.
In the first section you put the date field or option field.
In the second section you put the field which is depended on the answer in the first section.
The second section needs a dependency. Click on the pencil of the section.
In this example, a section is shown if field 'Title' (option field) is equal to Mr.