How do you break down the barriers that exist between isolated departments?

Question: “Last week a group of people our admin team has never worked with made a request of us, and from the reaction of a couple of my co-workers, you would have thought it came from space aliens. We just don’t know what some of the departments in our company are really about because we barely interact, so when we do, sadly our first thought is, ‘Who are these people to make this request of us?’ As the team leader, I want to start making everyone familiar and comfortable with every department here, but how do I do that?” – Hanna, Administrative Supervisor

See comments below, and send your own question to Admin-Pro@nibm.net.