From your Admin Dashboard, go to Product>Website Products/Categories.
Show/Hide a Product
To show or hide a product, go to the product (by scrolling or searching), and move to the "Status" column, where you can select "Enabled" or "Disabled".
Show/Hide a Category
To show or hide a Category, again, navigate to Products > Website Products/Categories. On the left hand side of the screen you will see the list of categories. To make a Category or Subcategory visible or invisible on the front of your website, simply check or un-check the corresponding box.