A group of product are added to cart at once on the product page with one click.
To create a product page and be able to display more such other products. You need to follow these steps:
Step 1: Go to Navigation click Add Menu.
Step 2: Add a short menu with some child menu items
Buy more: add any URL, this menu item title is not visible
Blue Utility Denim Dress: select a product from product list or enter its URL
Step 3: You must enter the handle: group-products