S-Voice icon

[MIT001]

I have a Galaxy Tab Pro 8.4" tablet. I recently deactivated the double-click of HOME button to make the HOME button more responsive (which works). The YouTube video that explained this (along with a few other changes to speed up the tablet) suggested adding a S-Voice icon to the Home page but did not explain how to do this. Now that the Home button double-click no longer works, I cannot use S-Voice. Can someone tell me how to create and icon and add it to anywhere? Thx