how do i activate full function of featured image

i saw some people in forum has function like “align right””align left””align center””thunbnail size”,etc in the feature image

i dont have and thing just direct insert with fixed size.

how do i activate that kind of function?

picture i found it looks like this

http://s.wordpress.org/extend/plugins/multiple-featured-images/screenshot-2.png?r=747726

please note that this is not plugin

thank you