A method of fleet management, said fleet comprising at least two working machines for use as forest machines, characterized by the method comprising: providing a first user interface for controlling the fleet comprising the at least two working machines, presenting on the first user interface a first user interface zone and a second user interface zone such that the first user interface zone and the second user interface zone are presented for a user simultaneously, arranging the first user interface zone to display a hierarchical, graphic menu which comprises at least two mutually parallel first selection elements and at least two mutually hierarchical first selection elements, at least one of the first selection elements enabling establishing a remote communication link between a working machine and a terminal device in which the first user interface is provided; taking control of the working machine using the remote communication link; displaying on the first user interface, in response to a selection made by the user, simultaneously at least two parallel first selection elements, and at least one selectable first selection element related to at least one selection element selected by the user and belonging to the next higher or lower hierarchical level compared to the selected selection element, and by arranging the second user interface zone to display information based on selections made by the user by means of the first user interface zone, the information comprising at least one second selection element for executing at least one function for fleet management, and wherein the function comprises presenting at least one item of production data for the working machine to which the remote communication link is established. providing a first user interface for controlling the fleet comprising the at least two working machines, presenting on the first user interface a first user interface zone and a second user interface zone such that the first user interface zone and the second user interface zone are presented for a user simultaneously, arranging the first user interface zone to display a hierarchical, graphic menu which comprises at least two mutually parallel first selection elements and at least two mutually hierarchical first selection elements, at least one of the first selection elements enabling establishing a remote communication link between a working machine and a terminal device in which the first user interface is provided; taking control of the working machine using the remote communication link; displaying on the first user interface, in response to a selection made by the user, simultaneously at least two parallel first selection elements, and at least one selectable first selection element related to at least one selection element selected by the user and belonging to the next higher or lower hierarchical level compared to the selected selection element, and by arranging the second user interface zone to display information based on selections made by the user by means of the first user interface zone, the information comprising at least one second selection element for executing at least one function for fleet management, and wherein the function comprises presenting at least one item of production data for the working machine to which the remote communication link is established.