Depending on the way you choose to assemble and merchandize your packages, you may not want to display every product in a package as an individual line item when you add a package to an invoice.
When the Show product icons and names setting is off for a package, an invoice will not show the products contained in the package as line items—only the package name and the total price of the package will be displayed. This setting can be configured using the package editor.
Note that using this setting will also hide the names and icons of products in the package when the package is viewed on your Public Store or in the Business App Store tab.