Install as normal Shopify apps. Ignore if you are familiar with install steps.
- From Shopify app page, click Get.
- Click Install app, this will install the Scroll to Top App to your shop.
After the installation app panel will be embedded to your Shopify Apps page.
Enable XO Scroll to top
then click App embeds, and enable XO Scroll to top
XO Scroll to top app does not add any assets file.