The toolbars (and menu bar A bar at the top of the GoldSim interface that provides access to menus from which nearly any GoldSim operation can be carried out.) are originally docked. You can undock them and move them to another location on the screen (e.g., the bottom, or to the right of the graphics pane The primary portion of the GoldSim interface, where the graphical depiction of the model is shown.) by grabbing the docking grab bar at the left of the toolbar/menu bar and dragging it to the desired location:
If you drag it to the edge of the window it will dock itself at that edge (otherwise, it will float). Note, however, that you cannot dock a toolbar on the left side of the window. That is, you can only dock at the top, to the right, and at the bottom (above the status bar A bar at the bottom of the GoldSim interface that provides information regarding the status of the model.).
You can also undock a toolbar or menu bar (and turn it into a floating window) by double-clicking on the docking grab bar.