Step 1: Open your Shopify admin dashboard
Step 2: On the left hand side menu, click on Themes
Step 3: On the right hand side, click on the Customize button next to your theme
Step 4: From the drop down list at the top, select your product you want to add our subscription widget to
Step 5: In the left hand sidebar, under Product information, click on Add block
Step 6: Go down to APPS and click on the Subamplify Subscription Widget
Step 7: Drag the Subamplify Subscription Widget" to the position you would like to display on the page
Step 7: Click Save in the top right corner