Go to your theme customizer – code section.
Use browser inspector to find The ID or Class Name of an element. Please, open your store’s homepage, product page or cart page.
To make the browser inspector appear in Google Chrome push F12 on your keyboard. Then click on the Icon on the left to inspect an element of the page:
Go to the AutoCommerce admin and click to “Edit”.
Copy the placement code.
And paste the placement code to your product/cart liquid file to the right position.