The HUD has a maximized and minimized state that is toggled by clicking on the center circle; the maximized state is only available during the normal operation, the will minimize when doing other activities or not having an active character. When in maximized state, you have the option to change the orientation the bar is in by click holding from one side of the circle and dragging in the direction you want the bar to go; also known as a swipe gesture.
AnE vSYNTH HUD LAYOUT