You can typically customize the criteria for enrolling customers into the referral program based on star ratings. Here's how it's usually done:

Step. 1

Log in to your admin dashboard, and then under 'Manage Referrals'.

Step 2.

In this section, you can typically specify the minimum star rating a customer needs to achieve to qualify for the referral program. You might be able to set a threshold like "Customers who rate a product at 5 stars or higher are eligible."