Okay, press the " Cruise" button, you will see the " Cruise" light.
Now, Press the " Set" button at the bottom of your dial. This will set the speed at which you are traveling.
So, I.e you're traveling at 95kmph and press " Set" button, it will travel at 95kpmh on Cruise Control. hope it made sense:) If not,
Check this website, and just hover your mouse over the buttons to see their functions!
I'll attach a picture edited by me, Sorry for bad editing skills:P
Dashboard Details | 2014 Honda Civic-Coupe | Honda Owners Site