Translation of constable in Spanish

I would like to give you a proofreader's project. Proof reading sample sentences that were entered into the dictionary by our users. It is a very tough project and needs a lot of discipline and patience.
I will be here for another 3 hours, then about 2 hours offline and then again online until late. So the exception is in Spain, cause formal is usually vos/ustedes even when we speak to 1 person. They also jump to the third person singular.
I guess the whole idea is about improvement, correct? How are you these days anyway. Since I want to practice a bit, I decided to join here. I'll be happy to start with you. Let us try it.