Very easy to put in. It's got 4 pins that fit into holes in the back of the car. Folds up in a nice little package if you need to remove it. Easy for one person to put in and take out.
The screen itself can flip down if you don't need it. I keep mine in the car all the time. Rarely have a backseat passenger so no need to remove it. I do flip it down if the top is up.
I will warn you that it may get knocked down while driving. I seems like a really strong side breeze can flip it down. Only happened to me once, but it scared the crap out of my wife and I. I thought I was taking gunfire!
Joe