Why two focus controls on Canon KT14X44KRS?
Many lenses of different types have separate Macro modes that allow the photographer to focus on objects that are closer than they normally would be able to. Generally this Macro mode would apply if the object is within 1' of the lens. 

There are plenty of ways to work around this limitation creatively, and nicer and more expensive lenses may offer better performance. 

I did check the manual for camera, and it doesn't have any information about the Macro mode unfortunately.