Assistance apparatus for working vehicle and operating device for working vehicle

An assistance apparatus for a working vehicle includes a controller configured or programmed to control a plurality of functions relating to the working vehicle, a first function operation actuator to select a function among the plurality of functions, and a second function operation actuator to change a control parameter of the function selected via the first function operation actuator, and the second function operation actuator includes a dial switch to change the control parameter by being rotated.