Normally, tool options are displayed in a window attached under the Toolbox as soon as you activate a tool. If they are not, you can access them from the image menu bar through
Windows → Dock able Windows → Tool Options which opens the option window of the selected tool.

If Move is on “Layer” – Only the current Layer will be moved.
If Move is on “Selection” – The selection’s outline will be moved.
If Move is on “Path” - The mouse pointer turns to a small hand when it goes over a visible path. Then you can move this path by click-and-dragging it (it will be the active path while moving).