Is there a way to make the glass window a moveable object?

I want to put a glass window in the elevator but i can’t make it go down using matinee because it is not movable. Is there a way to make it movable?

Does anyone know?

Click on the glass in the editor. This should open a panel of details somewhere on the screen. There will be a tick-box at the top of the details panel which states mobility. Set this to moveable.