Samsung Galaxy S4: How to Enable, Disable and Configure Hands-free Mode in Android 4.4 Kitkat

When I was digging into the Settings menu in my Samsung Galaxy SIV, I found an option called Hands-free mode. In a quick view, I noticed that this feature as same as Driving mode feature in an old Samsung Galaxy phones. Basically, Hands-free mode is designed to allow the user using the phone without touching it because the phone will read for the selected options in Hands-free mode, for example