Advanced rules for request types
You can set up advanced rules that include logic to automatically populate any request field based on user entries. You can also use advanced rules to automatically change field attributes such as whether the field is visible or hidden and editable or read-only.
Note: Configuring advanced default rules requires knowledge of SQL or JavaScript.
Caution: We recommend that you review Important considerations for configuring advanced UI rules and UI Rules: Examples before you set advanced UI rules.