How can I install a sink in my basement bar?

Buy a sink; cut a hole in the counter top;
Okay really, how can you possibly expect an answer to something like this.
Sorry, but without some kind of reasonable information how can this be answered?

how can I install a sink in my basement bar?

This question demands more details.
What is it you wish to know. How to set the self riming bar sink? How to pipe the drain and vent? To run water to it?
To answer this we will have to know what drain you have to connect to and how easy it will be to vent it. To tell you how to do a job we will first have to know what you have to work with. Waiting on you, Tom

I'm sorry for the limited details. This is the first house that I've ever had with a basement and so I'm not really sure how I can get the water to drain? I can cut the hole in the bar and route the hot and cold but I don't knoe how to drain the water back out.

Make me a drawing of the basement showing all the drain pipes coming down from up stairs and where you want the fixtures located. Also if there's a cleanout show that too. Regards, tom