Create Template Apply to One Page
From Posstack.com Documentation
This tutorial will guide you on how to build a custom template for one specific page (Product, Store page, or Blog Post)
The setup steps are the same for all page types: Product, Article, or Store page.
Step Overview
Select a product/page. Select “Create a template for this product” from the More Actions menu. Select a prebuilt template. New template will be created and assigned to the selected product.