Rules allow you to control how a user interacts with a form based on the answers they provide to various questions. You can control which pages users see, what error messages they see, when a form is automatically completed, or when additional fields are marked as required (even if they haven't been marked as required on their own).

When adding rules, think of it as a condition followed by an action. If the condition is met, the action will proceed; otherwise, it won't. A condition is a combination of choosing a question, choosing an operator, then choosing a value. For example, we might have a question called "Birthdate". We might want a rule where if the user is providing their birthdate but they are less that 18 years old, we want to take them to a different page of the form. This rule might be:

If Birthdate less than current date then Go to page 3.

You can provide as many rules as you want, and when each question is processed when a form is submitted, the rules will be checked and the actions will take place accordingly when the rule conditions are met.

See Add a Rule and Managing Rules for additional information.