Steps to be followed in order for a created policy to be enabled in a distribution:
Step 1: Go to the distributions tab in the main navigation menu.
Step 2: Click the distribution you want to activate the policy.
Step 3: Go to the WAF Policy tab on the Distribution edit page.
Step 4: Select and save the policy you want to apply.
When you perform these actions, your WAF Policy will be enabled for distribution. You can change your WAF Policy by choosing a different policy from the menu in the same section.