Step 1. You need to login to your Admin control panel and click Set Up Software then Settings.
Step 2. At this click shows advance settings and click learn more beside the Integrate a registration form into your existing website.
Step 3. Click integrate affiliate sign up page with my website.
Step 4. Create a new form.
Step 5. Complete the fields required.
Step 6. Copy the code and log in to your Shopify account.
Step 7. Click pages then Affiliate Program
Step 8. Show editor
Step 9. Paste the code the save