I accidentally deleted the app icon for photo from my Home Screen. How do I get it back?

Got it. Swipe left, left, left, and eventually you come to a place with all your apps listed as icons. Just press on the one you want, in the case it was camera, and then at the bottom is says "Add to Home Screen." And it put it back exactly where it was before I accidentally removed it. Thanks people.

But. But. I don't want to have to customize the entire screen all over. I just want to put it back anywhere so that I can put it where it belongs (for me). If I "restore the home screen" will that change all of the Apps?