Abstract: A working apparatus comprises a working machine, a tool, a boom construction, and a control system. A first end of the boom construction is connected to the working machine. The tool is connected to an opposite second end of the boom construction. The boom construction comprises a first boom and a first actuator controlling the first boom, a second boom articulated to the first boom and a second actuator controlling the second boom, and a third actuator controlling the position of the tool. The control system has a link mode, a parallel mode, and a tool-levelling mode.

Abstract: A method for controlling a boom construction and a tool articulated thereto, the boom construction comprising a first boom and a first actuator controlling the same, a second boom articulated to the first boom, and a second actuator controlling the same, as well as a third actuator controlling the position of the tool, wherein in the method: the first actuator is controlled manually; and/or the second actuator is controlled manually and the third actuator is also controlled at the same time automatically to control the position of the tool. For example, the first actuator is controlled by use of a first set point; and/or the second actuator is controlled by use of a second set point; and in addition, the third actuator is controlled simultaneously by using for the control a variable dependent on at least one of said set points.