Choose a promotional program and create a new rule

Firstly you should ensure that the debug mode is on. Go to Sale -> Products -> Discount & Loyalty ->Create a new program. After creating the program we can see that a 'Add' button in Rules & Reward section.

Set the Domain

On the wizard we can see that the field for adding the customer domain. Click on it.

Set the Domain Rule

On the wizard we can set the rule for selecting the customer using any rules. After setting the rules then save it.

Confirm the rule

Apply the promotion