To create a new empty rule, select Create rule. To duplicate an existing rule, select the three dots next to it > Duplicate.
Enter a descriptive name for the rule in Rule name.
Under When incoming requests match, select if you wish to apply the rule to default content types (content types that Cloudflare compresses by default), or to requests that match a custom filter expression.
(Optional) To define a custom expression, use the Expression Builder (specifying one or more values for Field, Operator, and Value) or manually enter an expression using the Expression Editor. For more information, refer to Edit rule expressions.
