How would i go about Moving One model up and one model down?

I have a two models and i'm trying to figure out how to have one of my models in its place tell said player clicks on it then it goes down and the second model goes up to its position.

Would love some help or other ways of doing this you don't have to give me a whole script i just want to know where to get started.

-Brett

Using a ClickDetector's MouseClick event, you'll be able to detect when it's pressed. To move an entire mode, you'll need to use MoveTo